Interesting question.
Likely multifactorial reasons for non heterosexuality from genetics to maternal hormonal influences, epigenetics to imprinting to honestly who the hell knows. Likely not the flip Wilson as 'Geraldine' cause tho.

I have been to one WoR and based on my other group experience I unscientific ally estimate about 4o to 50% were str8, 30 to 40% gay, 20 to 30 % ish bi and/or uncertain. And about 10% asexual or just plain done with the whole damn thing. Cuz as one of the best posts ever stated. " csa represses the persons own sense of sexuality"

I now identify as gay. But I was happily ( yet vaguely unsettled) married for years. Have great kids, great ex. Life got better when I stopped asking why and just accepted I am the most loving person to others when I gave up the guilt and shame and anger and blame.
The need for love lies at the very foundation of human existence. Dalai Lama

WoR Barrie 2011