Libertarians do not deny the need for morality in government. Okay, maybe they express themselves in John Stuart Mill-type language and proclaim we shouldn’t “legislate morality.” But that’s a manner of speaking. I find libertarianism to be among the most moralistic of ideologies. Probably because it can afford to be, not having to worry about the burden of command.
Certainly they believe in the moral case you make against the Great Society. They would be apt to put it in purely economic terms. But you can express moral arguments in economic terms. If you subsidize something you get more of it, including profligacy, laziness, lechery, etc.
All right, so why are you against marriage on the federal level?
Clearly anyone can see the economic benefits to the country as well as the moral bennies.
No... The liberatarian position is clear. If it ain’t in the Constitution then they oppose it. It may be morally correct, but who are we nanny-staters that dare impose our moral views on the rest of the US?