This article is perhaps the most sensible thing anyone has said about same-sex marriage that I have ever read. Here’s the money quote:
[T]rue conservatives should welcome gay marriage. For its increasing acceptance across civilised countries represents not the making gay of marriage but the making conservative of gays. The desire of an increasing number of gay men and women to have their stable and lifelong relationships recognised equally by family, friends and society as a whole demonstrates the respect of individuals within, and towards, an important institution.
That’s exactly how I feel. It seems to me that, instead of arguing against SSM because it will somehow destroy the institution of marriage (which is perhaps the most unfounded argument against SSM), conservatives should be welcoming these people into the fold as potential saviors of the institution. After all, shouldn’t we be glad that there are people who desperately want to be in life-long committed relationships? There are certainly enough heterosexuals who seem not to want that, and show it by their behavior. If homosexuals want to marry, that says good things about them which ought to be rewarded, not dismissed.