I agree with this post. Unfortunately Obama may have said that he isn't a proponent of gay marriage in order to get the votes, but he admits that his opinion is evolving and has shown that in his actions. He is all for building equality and even encouraged congress to repeal the "don't ask don't tell" policy which barred individuals whom are openly gay from serving in the armed forces.
Fortunately, arguments against gay marriage tend to come off as irrational and close-minded. Many studies done by the opposition in order to prove that gay marriage is damaging to...whoever...have been discredited. At least Obama is mostly in favor of gay marriage and wants to leave it to the states to decide. This says a lot compared to the candidates at hand.