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.pdfhttps://dl.dropbox.com/u/146411/BookClub/NLM.epubhttp://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?
Don't worry about proposing solutions after the system collapses. Whatever Utopian systems you promote better begin with a large doses of Warlord repellent to deal with the pragmatic actualities of that future existence. Perhaps you should hang your cherished, quaint, and naive tenants of your ideology on a sign outside your encampment. So when the roaming band of starving, desperate people see it they can reflect on the finer points of cosmopoltian, bourgeoisie theoreticians of the 20th century; that is, right before they roll into your camp and plunder it for their own survival. Perhaps, if they are feeling generous - a faded memory of a lost time - they'll leave you with your eyes to cry with.
People frozen in your 13 year old emotional state should simply pay these issues no mind. Leave it to actual adults with grown-up ideas, who read grown-up books and have grown-up conversations and quit being a radical advocate for your own personal and nation's destruction.
I'd appreciate it, thanks.