I know not everyone thinks it's a choice I think the majority know sexuality isn't something you choose, it's an innate part of your being.
I grew up thinking I was straight because that's how I was conditioned to think. Then I went through a period where I considered myself asexual, then I met DP and realised I was never asexual, I was just never attracted to men. I tried - I really did - to make it work with guys. I even went out with one guy who proposed to me, and I seriously considered saying yes because it would have been so much easier than questioning myself even further - but I couldn't because there was nothing there.
But when you say it in reverse - "heterosexuality is a choice!" it just sounds ridiculous. You can't help who you're attracted to and to suggest a large chunk of the population have chosen a sexuality that will offer a significantly greater number of challenges is just crazy.
Not to mention that humans are animals. And homosexuality occurs in thousands of species so evolutionary speaking, it's not remarkable at all.
It upsets me to hear that people think it's okay that I have a gay relationship if I chose to but that since biologically my partner and I can't make a baby, we obviously shouldn't be able to have one and other such nonsense.
That's all I wanted to say.