You can demonize me all you want, but it's not a substitute for carefully thinking through your views. I imagine it's more fun though, and less risky - after all, careful thought can result in discovering you are wrong about something.
If sexual orientation is not a preference, is it genetic and if so, what happens if scientists can screen for it?
Suppose appetite for risk is genetic - does that mean we should stop saying "risk preferences" and (as a matter of civil rights) must stop legally favoring certain choices regarding risk?