Interesting discussion.
I am not sure if it's a nature thing myself. Some of the women I've talked to who are now gay/bi have some sort of childhood experience that has kinda shaped them to how they are. Most have openly admitted that is prolly one of the reasons. Overbearing father, or rape somewhere, abuse, etc. I am not staying it applies to ALL, just some of what I've noticed in my life, and experience.
I think it falls under the same nurture, just like fetishes. I have had a foot fetish as long as I can remember, first memory was as a 3 year old in a drive way tickling a friend of the family's feet. No, I was not popping boners at 3, but all through my adolence I was crawling under tables, and tickling or massaging feet until I hit puberty.
So somehow, somewhere I became programmed for the foot fetish. I do not believe I was born with it, and obviously, if I had a choice in the matter, I am not sure a fetish for the foot would have made my top 3, although it has it's advantages, and I do not worry so much about it at 32 as I did when I was 14 popping boners to women's feet.
