I don't have a horse in this race, but what is so special about two human being getting married? It's just a legal definition, can be done in a Justice of the Peace's living room. The religious types can have their church weddings if they think that makes it somehow different. Why do people care so much? It can't possibly hurt my marriage. Either disallow all marriages, or allow all marriages between two people IMO. 50 years from now, this will be looked back upon the same as the women's right to vote or slavery, ancient and foolish. The new generations of thinking people could care less about it.