I'm afraid you're wrong about wanting "nothing to replace it"

And Ron Paul isn't my Poster boy. I'm not a political Libertarian, I'm an agorist. That means I want to build the replacement system right now, within the shell of the old failing one, so that when it crumbles (oh, and it will, on that, I think we can agree), the new way is there to take up the slack.

A few links that may help you understand my position:
http://freekeene.com/files/marketforliberty.pdf
https://dl.dropbox.com/u/146411/BookClub/NLM.epub
http://agorism.info/

But before you read those, I want to ask you, What is it about human nature that you believe libertarianism would need to change?