@RickiTarr True. But small-minded people think otherwise.
"There are just two genders, male and female. This is obvious." Well, actually, no. Nature is much more complex than your simple black and white model. And this design is intended. It maximizes survival of a species that depends on sexual reproduction.
If humans had just two genders, we would be unique amongst all mammals. We don't. Neither do lions. Have you ever watched two male lions having sex? No? Quite a few male lions prefer sex with other males. Didn't know that did you? You know, ignorance makes you look stupid and makes you do stupid things that end up hurting you, personally.
Learn something, read books, stop listening to propaganda, pull your head out of your ass, I mean, the Bible, written by ignorant shepherds 3,000 years ago. See how the world really works and enjoy it.