Yep, it's all happened. Religious institutions stick their oars in. Politicians talk about "debates" (which gay marriage opponents have already lost in reality). All to give gay people the right to do what many straight couples treat as a seeming triviality.
Its strange to think of so many people getting worked up over it, since many probably don't really care. I think gay marriage is becoming very much like a modern day version of mixed race marriage, give it a few more years and we will be amazed anyone was against it