What Do Libertarians Think About Gay Marriage?

Matt Welch and Nick Gillespie perfectly illustrate why I'm not libertarian on social issues. This is literally a knee-jerk discussion, and I doubt a longer libertarian treatment, perhaps in their new book, would be much better --- I haven't read it though, so this is all I've got. Still, this is pretty familiar terrain, and completely divorced from decency or moral consideration, IMHO:

For a recent argument against gay marriage, see "Conservatives Block Homosexual Marriage Law in Washington State."