You don't see a difference between protecting private consensual conduct and forcing others to accept the normalization of that conduct. I do. States should not only be free to make their own laws, which may recognize legal marriages between brothers and sisters if they choose, but to reject such unions imported from other states if they so choose.
So what you are saying is that we should discrmiinate because you get all uptight if you see two dudes holding hands.
Do you have any arguments against gay marriage that don't involve "God says its wrong" or "I think it's icky" ?
California does not recognize a common law marriage even if the couple comes from a state that does. It works quite well.
People used to think this worked quite well, too. I mean, they can get the water, what are they complaining about?