[aquaduck]

My argument is that opposition to gay marriage isn't intrinsically hateful. The ancient Greeks had no notion of gay marriage, for example, and they weren't exactly averse to gay sex or to men who enjoyed it.

Your system of values, beliefs, and definitions may create a tunnel vision which makes it look like opposing views can only be motivated by hatred or bigotry. But the reality is, other people have different views because they hold different values, beliefs, and definitions. If you cared more about the preservation of traditional culture, and not so much about the peculiar way that homosexuality is expressed in modern western societies, then your views would presumably be in line with those of Eich.