[YellOh]

I think it would be more similar to prohibition than pineapple pizza, at least to people who care about it.

Presumably less alcohol/less gay marriage is expected to help save people from the temptation toward grievous sins (at least in Christian settings), and help support the traditional family unit in its duties to raise the next generation (less alcohol = less domestic abuse and financial stupidity / less homosexuality = more straight relationships, more children, and partnerships more likely to follow a traditional division of labor & have a woman to raise the children).

I'm in favor of equal rights to marriage, I just think your comment would badly fail the Ideological Turing Test.