Clayton,
I think that you’re missing the purpose of morality.
For taste (food taste), what’s the purpose? It’s your subconsciousness advising you on whether or not to continue eating whatever you’re eating. It pays attention to the stuff in the food (whatever that means), what your body needs to prosper, and so on, and makes a recommendation. But thanks to the food industry of the past whatever amount of time, it’s extremely maladaptive in the modern world (at least for my goals). It makes a barrage of totally insane suggestions at every turn (again, at least for my goals). We’re hard-wired to take our taste as an end in itself (that’s why it “tastes so good” to your present self no matter whether your future self would approve), but most of us also want our health to prosper in the long term. During “our primitive existence in the sweeping grasslands of Africa”, I assume that those 2 goals (our present-oriented one and our future-oriented) were perfectly in harmony. There was a harmony of interests between our different selves over time. But in the modern world, we find ourselves with a serious conflict of interests between them. It’s a tricky situation, and it destroys countless lives.
As I alluded to in the previous paragraph, I suspect that the violent disagreements, and absolutely dumbfounded regrets, that almost everybody experiences day in and day out with respect to what to eat (should I indulge or not?) is because of some sort of unnatural situation (fake food, easy access, and so on). In other words, I suspect that if one were in a more natural situation (no fake food, the necessity to do some hard exercise to “earn” your food, and so forth), there would be some sort of harmony of interests between your different selves over time. It wouldn’t be that you would hope to God that you would be able to overcome some sort of “base craving” so as to sustain your health in the long term (such as avoiding eating too many donuts or something); it would be that your short term interests would align perfectly with your long term ones. Just as the state can destroy the harmony of interests among the people, and destroy the mechanisms which coordinate the actions of the different market participants over time, an unnatural situation for your body can wreck the harmony of interests among your different selves, and wreck the machinery which coordinates them over time.
But because the taste system that I was born with is so maladaptive in the modern world (yet again, at least for my goals!), I must compensate. I must submit some conscious intervention and regulation into the process, lest I find my different selves make war with each other. If I simply go by what tastes good, I will find my different selves torn in a distracting battle, while my ultimate goals go unfulfilled. So what’s there to do? For my decision of what to eat, I can either listen to my subconsciousness (my taste system’s output), my consciousness (what I consciously think about it), or a combination of both. To avoid droning on and on about this, I will avoid talking about how exactly I solve this classic problem, but for the purpose of this topic it’s sufficient to point out that I’m not the slave of my taste system’s output. As it’s very unstable in the modern world, I must intervene with its activity. If I let it go about its own thing, it will lead me into destruction. I mustn’t take its output as the final world on the subject. I don’t find it an end in itself (as some may), so I must question it. If it outputs bad results (e.g., it tells me to eat something, but I suspect that it would be a bad idea to take that advice), I mustn’t let it push me around.
Now, it’s the same exact thing with morality. For your moral sense, it’s your subconsciousness advising you about whether or not to approve of whatever social interaction that you’re witnessing or a part of. But (as you stated), thanks to the market system, it’s extraordinarily maladaptive in the modern world (at least for our goals). For most people (maybe not us?), it makes a flood of completely moronic recommendations at every corner (again, at least for our goals). And on and on. It’s all the same with morality as it was with taste. Just as we must decide what to eat based on our conscious calculations (common sense, biology, medicine, and so on), the advice from our subconsciousness (what the food actually tastes like), or a combination of both, we must do the same with what social interactions to condone. And as our conscious goals are the final word on what we should eat, our conscious goals are the same for what interactions we should approve of. If the purpose of our taste system is to advice us on what to eat, the purpose of our moral sense is to do the same for whether we should condone a given kind of social interaction. But if either of them outputs bad results (i.e., anything going against one’s conscious goals), one mustn’t let it push them around.