Edit: Well yeah, I know that there's a lot of cases where religious types use religious reasoning to argue against gay marriage. But then the non-religious take the moral high ground and act like they're better because apparently no secular person would be against gay marriage, which if you do some research, you'll find is untrue.
I tend to question the person who's using common illogical arguments against gay marriage.
- They're probably religious, even if they're claiming a secular argument.
- They're probably stupid, because even a child can refute their argument without issue.
I'm sure there are Atheists and the general non-religious against gay marriage, but it's probably more over the 'ick' factor (to them) than anything else. By and large, most of them probably don't give a fuck either way, and just want people to be happy without having to think about what they do in the bedroom.