A straight man doesn't need to be aroused to achieve an erection, have sex and produce ejaculate. Mengele knew this and so do homosexual, male predators...especially male convicts. Many male victims of rape end up questioning their sexuality after having orgasmed during the assault.<quoted text>
Personal attacks? It was a legitimate question.
I've never consciously chosen not to fancy blokes I'm attracted to women, dark hair, dancer-fit, not skinny, around a UK size 12-14 with good skin. That is my 'type'.
A straight man could not achieve and maintain arousal to successfully participate in a sexual act with another man. Arousal is not an act of will or a choice. I don't need to email any academic institution to know this.
You are obviously speaking from personal experience where the idea of choice is concerned, apparently you're internally conflicted on the idea of sexual orientation...and gender.
All of these proponents of the idea of a 'gay lifestyle choice' are never keen to answer the question of when they made their choice to stop being attracted to their own gender.
Consensual sex is all about choice or will. You choose what to do with who.
BTW, the email comment was about proof of the gay gene evidence not about your personal sex life.