I agree that what we do today is not national defense but I still don't have faith in the Libertarian ideology with addressing the threat that terrorism poses in the future.
Also, while the bailouts wouldn't happened there would be so much financial fraud that it would be a joke. Human greed always needs to be checked in one way or another. How much longer would the massive bank currency fixing gone on without regulation?
I do respect how strong you are to your views though. World needs more people like that. I just disagree with the implications of those views.