I'm neither for nor against homosexuality since it's not like an ideological or political stance. I literally don't give a crap if someone is attracted to men, women or space aliens from the planet Zarg. It's none of my business and it's a total non-issue for me since it's so unimportant that I don't ask.
Really, it's no different than what race you are, what allergies you have or what country you were born in, which are also a complete non-issues for me, too. The only things that matter to me are the things you have chosen, those are things I can disagree with, if you think that all black people are an inferior race then I can disagree with that and even argue against it, but sexuality cannot be argued because it's not an opinion, ideology or standpoint; it's part of who someone is.
Think of it this way: would you disagree with blindness?
Sounds stupid, doesn't it? Same difference for sexual orientation.