I think, however, general understanding that homosexuality is something a person is 'born with' -- had huge impact on policies and public debate around legalizi

I think, however, general understanding that homosexuality is something a person is 'born with' -- had huge impact on policies and public debate around legalizing homosexual marriages. Being born with it, rather than a choice -- meant that unfair treatment of homosexuals was morally equivalent to race/ethnic origin based prosecutions. Therefore, civil rights accomplishments, and modern legal framework resulting from those -- would apply to homosexuals. If 'being born with' would not have been recognized as scientific truth, then homosexual marriages would likely be treated the same as consenting adult polygamists. I think this is one of reasons why non-binary people having hard time being recognized in same policy/morality structures as homosexual people. > Ultimately, homosexuality in humans is fine not because it's natural, but because we should, by default, let consenting adults do what they want together.