A quote from Mollie Ziegler at AFF Doublethink, 26 July 2006

I am a libertarian. […] But more than a few of my fellow ideologues became libertarians solely because they’re gay, drug users, or God-haters. These people adopted the philosophy to justify their personal issues. Libertines more than libertarians, they have a visceral reaction against people who exercise moral restraint. […] What we’re fighting about, then, is not enjoyment of sex but, rather, a sexual ethic. And since the data rather consistently suggest that those with traditional sexual morality have more satisfactory sex lives, it’s high time liberals shut up about conservatives’ anti-pleasure principles.

[…] While marriage doesn’t always live up to this ideal, it’s at least built around the right archetype. […] Those on the right end of the moral spectrum do not lack imagination—they simply discipline themselves.