I think you're putting too much blame on religious groups. I think you should equally blame people like me that aren't coming from a religious angle at all. Homosexual marriage simply makes no sense, which is why it's never been part of our social landscape in this country and, for that matter, hasn't been part of the social landscape of any country in modern history. It's not just because "religious groups" think it's icky or sinful. It's because marriage is a biological pairing. We're trying to change that and make marriage something else and maybe those in favor of that will succeed, but forming a couple sanctioned by the state to form a biological family unit was the purpose of marriage (despite countless SSM asvocates shrieking that it's really all about other things, instead). When people are ready to accept that marriage is no longer what it's always been and that this, something that most of us considered the most unchanging thing in our society, has changed, then the legislation will follow. I guess it will follow for polygamy in the same path because I think that will be inevitable, too. We're moving into an age where we feel that there shouldn't be any restrictions on such things as adult relationships, so eventually, anything will go. How it will work out, who knows? We should probably try to get a handle on that first, though, because these things, once changed, are rarely able to be rescinded peacefully.
