Olbermann on proposition 8

Keith Olbermann asks why two people of the same sex marrying matters to those who voted for proposition 8:

Indeed, I would like to know, too. You can post as anonymous in the comments, so go ahead and tell me why you think same-sex marriages should not be allowed. Please be specific. Don't just say that it destroys the sanctity of marriage, or that it's unnatural (because that argument I have already razed). Are you afraid somehow it will make your children gay? Is it the thought of the sex that disgusts you? Do you think Fred Phelps is on to something? What?