Who your kids marry is up to them. We know that for males whether they are gay is predetermined. No so much for lesbians. Regardless, recent and soon to be unfolding legal developments will give all young people an accepting system that already matches their culture. They don't see this issue as a big deal (unless they are sucking up to coservative parents or bosses, and the latter is less likely). Only bullies are the exception. If we can make them behave (and their parents), society has a good future. Any society that happened to have open homosexuality that fell did so for different reasons, usually having to do with concentration of wealth and the unwillingness to tax it.