The only losers to be made out of the SSM debate are Americans who honestly and ardently believe in the sanctity of traditional marriage. Now, this isn't to say that opponents of gay marriage have good reasons for their opposition - because, quite frankly, they don't. However, the narrative that opposition to SSM is rooted in hatred and bigotry of homosexuals is just plain wrong: if that were the case, we'd be seeing calls for the criminalization of homosexual activity, et cetera.
You realize that sodomy laws weren't overturned nationwide until 2003, right? You also realize that many of the same "sanctity of marriage" groups in the US were/are responsible for things such as the "kill the gays" bill in Uganda, right?