The way you think just leads to nonstop arguments and feuding. Also, what does religion have to do with this? I know many athiests who don't support gays just because they don't think it's natural. Maybe they're wrong but that's their opinion.
Because there are absolutely no logical arguments against gay marriage. Im sure a vast majority of people who don't support gay marriage do so because the bible said its awful. Also chick-fil-a doesn't support gay marriage because of god.
Ok so why should I respect a wrong opinion?