I agree with others in that the sanctity of marriage is pretty much already lost with such a high divorce rate.

The whole idea of homosexuality kind of weirds me out, and it's something I would never do. However, I don't see how we have the right to tell a person who they can and cannot fall in love with. As Twisterdog said, it's like the Jim Crow laws saying that a black person could not marry a white person. It's just stupid for the society as a whole to decide how love works. How is a homosexual marriage going to harm a heterosexual marriage?