Having every gay couple wait another couple of decades until everybody gets their head out of their ass to have basic rights like visitation of their partner in the hospital, inheritance rights, co-parental rights of children, etc. is an unacceptable moral compromise, and it is heartless to demand that millions of gay Americans make that sacrifice so that the law can look like I want it to.
We still have a long way to go to recognize all of the shapes relationships take (I'm non-monogamous, for example, and don't really expect to see multi-party legal unions in my lifetime), but making one huge group of people suffer while those other things get sorted out is an ethically untenable option, for me. And, honestly, I suspect this is a step in that direction...the religious loons will continue to campaign for changes, because of this. And, we can continue to push for reform.