As far as I'm concerned, the debate's over, the slippery slope argument is bull**** (no one's going to marry an animal or an inanimate object), people came to this country to break from all kinds of "traditions", to dodge paying taxes to the crown, to avoid jail and hard labor, etc. We're supposed to accept everyone. We are indeed the great experiment and as such we should be leading by example rather than dragging humanity back to the Middle Ages.