Ultimately, I'm not a libertarian becuase I realize that liberty isn't an end but a means to an end. Ultimately, the purpose of liberty is to provide a pleasant life and to free people from tyranny, it isn't to allow the the dregs of society to make life a living Hell for nice people, to abuse the misguided and ignorant, and to drag society down to an unsustaintably hostile level of social interaction. At that point, liberty actually becomes the tool that makes life unpleasant by creating a tyranny of the crass, since no man is an island. If that's what you are using liberty for, I have no use for it, just as I have no use for peace if it only serves to keep sadists like Saddam in power. Society should have no use for sadists no matter what skirts (freedom, peace, etc) they hide behind whether the sadist is a dictator who rapes and tortures his enemies or a pornographer that beats young women to a pulp.