I have a question in the philosophy of sexuality.
Some studies reveal that homosexual men and heterosexual women have symmetrical brains, unlike heterosexual males. Also, an early post-mortem study found that a small region of the anterior hypothalamus was smaller in homosexual men than in heterosexual men, and no different from heterosexual women. There are many other discoveries about the brain, hormones in the womb that may influence sexuality and so on.
Considering all the biological evidence that something is biologically different in homosexuals, how was it concluded that it's normal and equal to heterosexuality? Why is it not a malformation like any other changes in the body caused by various factors, including genetic or hormonal influences? How does it relate to conditions that are typically called disorders, malformations etc? While it is no longer in the Diagnostic of Statisical Manual of Disorders, it once was. Science hasn't yet explained why homosexuality exists, there are only hypotheses, so I'm not sure about how something that is different can be called normal.
I understand that homosexuality is completely natural, so is everything that exists in nature. I agree there shouldn't be any discrimination against homosexuals. However, the fact that something is poorly studied doesn't necessarily mean it's normal. And, of course, one's political views and feelings shouldn't be taken into consideration.
So, what does it mean to say "homosexuality is normal"?