I have come to a realization about myself. I am a straight, heterosexual male (no, that is not the epiphany). I have realized that I am not ambivalent about gay marriage. I am actively PRO gay marriage.
My reasoning is thus-
Every time you see a male couple going down the street in a committed relationship, that means there are two females that are now available. I see no down side to that, personally.
And with the female homosexuals/lesbians... really, what straight man doesn't think that's kinda hot?