The problem with gays, how ridiculous it may seem, is that they're all men. And men are naturally polygamists. Monogamy has a heritability of 0% amongst men. That means that if a man wants a stable and monogamous relationship, it comes from the influence of the society, so cultural norms which, in my opinion are partly influenced by the other sex. And women have natural tendencies towards monogamy because of the disproportionate effort they put into having an offspring.
What happens if we subtract women? We get Grindr, essentially.