I think what happens is that the deeper you go into the left, if you are of a generally radical anti-mainstream bent like I was entering school, you're attracted to leftist ideology because of the fairness aspect of the politics. It's a great time to read Howard Zinn and get pissed off about government, but I think as people who still hold that anti-government bent get older, they do tend to lean Libertarian. I know lots of ex-punks that are hard paleoconservatives now.
I went to all the left-wing anticapitalist protests and was routinely mistreated and violated by police and government. While my politics have moved center, I still maintain that distrust of the system because I know when you are outside of it, you're going to get mowed down. As I've gotten older, I care less about unfairness and more about interference. I've found unfairness can be overcome while interference cannot.
In short, I've found that while I've pretty much abandoned any desire to become a communist hobo, I still have a starting point of extreme suspicion and distaste for central authority.
Capitalism is a social system based on the recognition of individual rights, including property rights, in which all property is privately owned. (Credit goes to the Ayn Rand Lexicon for this particular wording of the definition)
No form of anarchism can protect individual rights, therefore, anarcho-capitalism is not capitalism.
Except the scenario that _my_ gang, also known at the U.S. government, happens to expand its territory to cover the entire United States, which is the goal, and enforces a monopoly on government.
