No, definitely not everyone. For starters, it should be obvious the GP would exclude "those who believe gay marriage is morally wrong". But in particular, I am

No, definitely not everyone. For starters, it should be obvious the GP would exclude "those who believe gay marriage is morally wrong". But in particular, I am especially wary of the "personal morals and ethics" of people making broad generalizations like you just did. Fortunately, I know somebody who's perfectly entitled to enforce his personal morals right back at you. And yeah, I am aware that you could do the same thing, but you also appear to believe that to do so would make you a bad person. So it's your choice, really: Submit, Be Good, or Be Bad.