Look, I agree with all of that, I just differ with what you decide one day of the year.
To me, Mises greatest insight, though I can't say it was purely his, was the idea that preferences must be taken as a priori. To me that is not only the foundation of economic choice theory, but the foundation of the theory of liberty altogether. viz. when looking at the actions of another person, we must not assume that he has the incorrect goals, but we can analyze how he acts in order to reach his goals. His goals are what make him human. Clearly, both political parties fail to understand this insight. Party politics has to fail in this because it requires a consensus of goals from different constituencies. Because of that, we get a very binary choice on voting day, and it certainly does seem that those of us who value liberty are at a loss for a choice, but I believe that it is a mistake to believe that this is really so. Analyzing the platforms and actions of the two political parties, it is clear to me that the Democrats do not believe in the ability to aspire to different goals, to hold different preferences, and their method is to impose group preferences on to each and every individual. This cuts directly at what makes us individuals, and free. The Republican party, on the other hand, makes no pretense of forcing single goals on disparate people, and where they err it is to circumscribe the actions of individuals. While I may not like the latter approach, it is certainly more in keeping with the correct (imo) role of the government in a society. It's a nuanced distinction, but an important one. And I think it makes the choice of voting really easy.