There is a serious overlap between conservative and libertarian philosophies, not to be dismissed with a wave of the hand. One could say that the Founders (Jefferson comes to mind) exhibited quite a libertarian streak.
Maybe that's why Jefferson (being the libertarian he was) reduced the punishment for sodomy to be merely castration instead of death.
Or something like that.
Libertarianism is impractical utopian philosophy, like marxism. Conservatism isn't a philosophy or theory, it's a practical, pragmatic, and PROVEN arrangment of society.