Here's a good article which looks at how libertarianism is "The Marxism Of The Right".
Libertarianism is basically the Marxism of the Right. If Marxism is the delusion that one can run society purely on altruism and collectivism, then libertarianism is the mirror-image delusion that one can run it purely on selfishness and individualism. Society in fact requires both individualism and collectivism, both selfishness and altruism, to function. Like Marxism, libertarianism offers the fraudulent intellectual security of a complete a priori account of the political good without the effort of empirical investigation. Like Marxism, it aspires, overtly or covertly, to reduce social life to economics. And like Marxism, it has its historical myths and a genius for making its followers feel like an elect unbound by the moral rules of their society.
Libertarians try to get around [the] fact that freedom is not the only good thing by trying to reduce all other goods to it through the concept of choice, claiming that everything that is good is so because we choose to partake of it. Therefore freedom, by giving us choice, supposedly embraces all other goods. But this violates common sense by denying that anything is good by nature, independently of whether we choose it. Nourishing foods are good for us by nature, not because we choose to eat them. Taken to its logical conclusion, the reduction of the good to the freely chosen means there are no inherently good or bad choices at all, but that a man who chose to spend his life playing tiddlywinks has lived as worthy a life as a Washington or a Churchill.
Libertarians rightly concede that one’s freedom must end at the point at which it starts to impinge upon another person’s, but they radically underestimate how easily this happens. So even if the libertarian principle of “an it harm none, do as thou wilt,” is true, it does not license the behavior libertarians claim. Consider pornography: libertarians say it should be permitted because if someone doesn’t like it, he can choose not to view it. But what he can’t do is choose not to live in a culture that has been vulgarized by it.
Empirically, most people don’t actually want absolute freedom, which is why democracies don’t elect libertarian governments. Irony of ironies, people don’t choose absolute freedom. But this refutes libertarianism by its own premise, as libertarianism defines the good as the freely chosen, yet people do not choose it. Paradoxically, people exercise their freedom not to be libertarians.
Libertarian naïveté extends to politics. They often confuse the absence of government impingement upon freedom with freedom as such. But without a sufficiently strong state, individual freedom falls prey to other more powerful individuals. A weak state and a freedom-respecting state are not the same thing, as shown by many a chaotic Third-World tyranny.
Libertarians are also naïve about the range and perversity of human desires they propose to unleash. They can imagine nothing more threatening than a bit of Sunday-afternoon sadomasochism, followed by some recreational drug use and work on Monday. They assume that if people are given freedom, they will gravitate towards essentially bourgeois lives, but this takes for granted things like the deferral of gratification that were pounded into them as children without their being free to refuse. They forget that for much of the population, preaching maximum freedom merely results in drunkenness, drugs, failure to hold a job, and pregnancy out of wedlock. Society is dependent upon inculcated self-restraint if it is not to slide into barbarism, and libertarians attack this self-restraint. Ironically, this often results in internal restraints being replaced by the external restraints of police and prison, resulting in less freedom, not more.
This contempt for self-restraint is emblematic of a deeper problem: libertarianism has a lot to say about freedom but little about learning to handle it. Freedom without judgment is dangerous at best, useless at worst. Yet libertarianism is philosophically incapable of evolving a theory of how to use freedom well because of its root dogma that all free choices are equal, which it cannot abandon except at the cost of admitting that there are other goods than freedom. Conservatives should know better.
I guess another thing I'd add is that Adam and Eve taking a bite of the apple was completely consistent with libertarianism. And look where that got us!