There are some people who genuinely believe gay sex hurts society by somehow negatively affecting the moral standards of everyone on a mass scale. It's crazy, but not as crazy as believing in three forms of God and zombie edible Jesus, which is often another belief held by these hypothetical people. (Straw man argument, I know, but they do exist... look it up.) I think what "they" really want and what they belief they already have (but they don't) is a theocracy. They believe the government should support a Christian belief system with laws and punishments, not unlike sharia law (another thing I just found out about... look it up). Why do you think they are so down on birth control, sex ed, and abortion? It's because they want people who have premarital sex to be punished. They ironically want what the middle east has, and again, sort of think they already have it with the marriage issue. This is why they get so bent out of shape. It's a good thing the predominant form of Christianity isn't Catholicism, otherwise people would be out there debating and protesting divorce.