It's not thought to be genetic otherwise it would be heritable and its clearly not. It would also have self extinguished before too long if it ever got a foothold in the first place.

It's likely a construction issue having something to do with something that happens in the womb rather than to do with the blueprints.

As a member of the LGBTQ community, I fully agree.

I’ve believed that we are a mix of nature and nurture for as long as I can remember, and it stands to reason that sexuality is a part of that. I also think the vast majority of people are far more sexually fluid than they would admit due to cultural stigma. Not everyone is bi, but I do think there’s a bell curve.

That said. I do also believe that people are born the way they are and the nurture aspect is more of a determining factor for how they express not who they are. I was raised and socialized as a straight male but realized in my 30’s that I’m queer and non-binary. Realizing that put so much context to the struggles I had growing up on a Christian environment and solidified for me that this is who I am, despite how I was nurtured. But had I not gotten out of the religion, I’d have never changed and just silently suffered and struggled until I died. My expression wouldn’t have changed who I am, only how I acted.

You can believe what you want to believe, you didn't say it in a hateful way at all.

I'm curious about what your opinion would be of trans people going through HRT though. When starting hormone therapy you are warned of potential changes to your sexuality. I am transfem, and prior to transitioning I was bi. Since starting HRT, I tend to have an aversion to men sexually and am more lesbian aligned now.

I guess that is fluidity and environmental factors, but biological factors even still.

Other people meanwhile experience the opposite effect (which is what I expected) or none at all.