So?

This is disorganized. Try to bear with me.

Assuming that, by “why should people care about your ultimate ends”, you mean “why should people care about” whether they achieve “your ultimate ends”, my answer is this, because they may either (a) hold the same ultimate ends that I do or (b) present the same manifestations that I do, of their ultimate ends, that is, hold the same ends less than ultimate that I do. We may, based on what ends that each of us hold, discover a thing or a process which, if initiated, strengthened, and then preserved, would be a means not only to the ends of one of us but also to those of the other of us, whether those ends are the same or not; which would allow us to establish a situation in which, in helping the other person employ those means to their ends, we help ourselves employ them to our ends, too, and vice versa. We make, on one hand, their gain our gain, making us want them to succeed, and, on the other hand, their loss our loss, making us not want them to fail. We call the common means of which I am talking “society”, “the social order”, “civilization”, or whatever; and we call the guidelines or rules evolved to push us to act to preserve society “morality”, “the moral code”, or whatever.

Of course, if such a situation were to not exist, people would have no incentive to enact society, and its corollaries, such as morality, compassion, et cetera; so they would not exist. (For an explanation of that, see especially this post.)

For support of all of my points here, see the following quotations, especially the boldfaced lines of it:

So, whether each of us holds the same ends or not, the common means to those ends, whatever they are, is originating, strengthening, and then preserving society. What we now need to analyze are the few people whose ends not only threaten to disintegrate those means, that is, society, but whose ends also depend on it somehow, that is, people living in society but still threatening to mess it up. Usually, we call these people “criminals”. I showed how we manage to get along and care about each other without any reference to any sort of “objective” or “absolute” morality or justice. But what is left are the people whose ends are not only not served by society but also threaten to impair it. How do we get past this? Don’t we need to bring in a sort of “objective” morality here to show that we are “correct” but the people trying to destroy society, like murderers, thieves, rapists, or whatever are “incorrect”? How else would be feel justified in killing these people? Why are our ends more important than theirs? Why is the end of a person A, that is, to raise a family, more important than the end of a person B, to kill people, including people like person A? We feel so passionate about our hatred toward people like B; so, surely, there is a reason why the ends of the person A are more important than those of the person B!

Before we try to answer that question, we should distinguish between two interrelated, but nevertheless separate, senses of the term “morality”, (a) the one referring to our ‘moral sentiments’, that is, what we ‘feel’ about specific interactions between people, and (b) the one referring to our ‘moral thoughts’, that is, what we ‘think’ about such interactions. We not only experience feelings, such as compassion, sadness, or whatever, regarding the fate of other people, even of strangers, pushing us to act in ways to better the situation. But we also think about those situations; for example, we might decide, based on economic theory, which is conscious thought, to fight to halt the massive, impersonal packages of foreign aid given by governments, to ‘third world’ countries, not because we are too ‘selfish’ to give up that money, but because we think that, contrary to the moral sentiments of most people unmolested by thought, and, in fact, even contrary to the moral thoughts of some people, including those of some economists, doing so is hurting those people, whether the people of those countries know it or not.

Our moral sentiments are shorthands; they are the advisements of our subconsciousness, regarding how we should treat other people to serve our own interests, that is, those of what replicators underlie us. But that is not special, odd, or anything; we experience many sorts of advisements from our subconsciousness; for example, our tastes of things advise us to either continue eating or not what we are tasting, through ‘good’ tastes and ‘bad’ tastes, and our fears, or lack of them, in situations, advises us to remain or not in the situation in which we are. (In fact, the categorization of our sentiments is based on (a) what the sentiment advises us to do and (b) what the ‘severity’ or ‘urgentness’ of that advisement is.)

But our moral thoughts are the opposite, they are longhands; they are the conclusions of our consciousness, what we directly control, regarding how to treat other people to serve our own interests, whether, in colloquial speech, we call them ‘selfish’ or not. With our moral thoughts, we make all of the calculations, whether they are the naive, unsystematic thought of a dullard or are the informed, systematic thought of an economist.

Most of us use both of those processes to decide what to do. We weigh the conclusions of our moral thoughts with the advisements of our moral sentiments. What marks psychopaths, in the formal sense of the term, is that they do not experience moral sentiments. They have to rely only on conscious thought to decide how to treat other people. What they do, whether they commit crimes, lie, or not, or whether they are normal, nice, productive citizens, is up only to their moral thought; they are not able to rely on their sentiments to tell them what to do.

Now what do you consider to be objective, universal, or whatever? The first one regards choosing what to do based on what our ends are and what we believe are means to those ends, that is, it regard the nexus of means and ends; and the second one regards what our subconscious advises us to do, also basing its advice on the nexus of means and ends. Why else would either of them evolve? Again, for more information, see especially this post.

But one does exist. What is different from what you are thinking of, though, is that it depends on the perspectives of the people in question. To quote Liberte, although I probably could easily find a quotation of Mises saying the same thing, “[t]here is no ‘right’ or ‘wrong’ except with regards to actual perceived means to actually felt desires of specific individuals”. What you are saying, which is just a restatement of your position, is that, “if ethics is just a matter of personal preference”, “no [objective] right/wrong ethical system” exists, that is, “no right/wrong ethical system” divorced from the nexus of means and ends, unrelated to the perspectives of the people of which you are talking, exists. But, when it is put that way, it is not ‘scary’ anymore; it is pretty commonsensical. Either way, I will try to substantiate why is makes no sense to talk of ‘right’ or ‘wrong’ outside of the nexus of means and ends, mostly just by quoting one of my other posts:

(See also my clarification of that post.)

But, despite all of that, I think that you are talking of something else. I think that you are talking about this, in which I answer “no” to all of those questions in my fourth paragraph:

Far from failing to see that, I wrote it out explicitly. Just because something is uncomfortable, though, does not make it false.

No, I am claiming that, outside the nexus of means and ends, no magnitudes of rightness or wrongness exist; and, if two things are equal, their magnitudes are equal. It makes no sense to say that, because a quality does not exist, that quality applies equally to two different things. Instead, it just does not apply at all.

I do not want to get robbed. So I try to avoid things like that. You are begging the question by asking what my objective, universal “justification” is. I am arguing that no such thing exists.

I never said that you did; you are trying to extend my analogy past its relevance.

Which individuals drive; which does not contradict what I am saying. Are you saying that markets move independently to the means and ends of individuals?

I am not sure what the last part of that means; but I was not saying that you were expecting that.