I don't know where you've been finding this argument but it's hardly representative of a good argument for libertarianism. I grew up in Europe (well, the UK, which is kind of Europe) [...]

FYI, "Libertarianism" apparently means something different in the United States than it does elsewhere. This comes from a friend who is currently majoring in Political Science. He claims that "true libertarians would just laugh at American libertarians." I do not know exactly what that means or give any more information, but it sounded relevant to the discussion.