Laughing Man,
It depends what you mean by “no reason.”
There are reasons for my libertarianism like there are reasons for my having brown eyes, i.e. causal explanations. However, if “no reason” means no justification, then I have no reason for being a libertarian. I don’t believe it is possible, necessary, or desirable for the premises of an argument to justify its conclusion.
My objection is the following metalogical proof, where “X” is any set of premises, and “A” is any logical formula,
If “X |= A,” then “X |= X, A”
If “X |= X,” then “X, A |= X”
From this, we get an equivalence,
If “X |= X, A” and “X, A |= X,” then “X =| |= X, A”
Therefore,
“X |= A” is equivalent to “X, A |= A”
If the above proof is valid, then there is no valid argument which does not beg the question. Thus justification, which can neither be invalid nor question begging, is impossible within a valid argument.
If my argument above is correct, then its own conclusion is unjustified. This is no problem, since a claim can be true and unjustified without inconsistency., and I merely claim that my argument is true. [EDIT: My signiture: “a criticism that can be brought against everything ought not to be brought against anything,” so if everything can be criticised for being unjustified, then nothing can be.] In consequence, I am neither a deontologist nor a consequentialist, since both concern how ethical positions (usualy placed as the conclusion of a valid argument) are justified, and I consider effort to reach this goal to be futile.
I prefer what I call a “problem-centered” approach to ethics with no pretense of justification. Rather than asking “how can I justify my beliefs?” I instead ask “what problems am I interested in solving?” This shift is very broad, but in the context of ethics, my basic concern is with how people can live peaceably despite their disagreements and conflicts of interest. Within this context, both the claims of deontologists and consequentialists (and even the statement of my problem) can be evaluated.