Profit.
Perhaps, but if the activities did not result in profit they would not be taking place. In America, "C.R.E.A.M."
When it comes to our biology no, when is comes to how gender is expressed absolutely. As far as sexuality, that is 'hole 'nother ball of wax 🥰
The science would disagree with you here and so would most homosexuals.
@frankster what would it take for you to "choose" to be homosexual? I suspect nothing. Consider why that is the case.
Sure, there are some people whose brains are wired in such a way that they are sexually attracted to people of both genders and can "choose" to have sex with either one, but they are bisexual, not homosexual. Sexuality is not Black and white it is complicated. Indeed gender as I have using it isn't even considered binary 😳