I read a comment once from a guy in (iirc) Oklahoma who didn’t want gays living in his neighborhood because then the real estate values would tank. I pointed out that he had to be right since houses where he was sold for nearly a hundred grand while here in SF, with our huge lgbt community, houses can be had for less than a million.

I will say, however, that — and this is based on first-hand, personal experience — in at least one instance, gay marriage has led to public intoxication (mine) and absolutely fabulous lamb chops served in a martini glass on a bed of sweet potato mash. Shocking!