wellwell saidI'm still not convinced it isn't a choice. (The absence of choice being an avenue for excuses.)
I realize that most can get their orientation so-early in life that it's easy to think you are born that way; but it seems to me that heteros' choose to be non-homo; in other words, str8. Personally, "I chose" 2b non-hetero @ about age 27 . . .
There is some research on the idea of it being both a choice and predetermined.
There are various shades of gay and straight and bisexual. Lets put it on a scale of -5 to 5
-5 is completely gay
0 is equally gay and straight (bisexual)
5 is completely straight.
The idea is that every member of the population will fall between these values.
You can graph the percentage of the population versus these values.
The image above is a stock photo
I'm not implying most people are bisexual.
Anyway, you can consider the values above to be "innate" sexuality, determined by genetics and chemical influences. Innate sexuality and how the individual defines his/her sexuality are two different things. It would be very difficult for a man who is innately a -5 to identify himself as a straight man... similarly a man that is innately a 5 will have difficulty identifying himself as a homosexual. A man who is at a 2.5 however could identify himself as straight just fine. Same as a man with 1.5, though less so. It would be possible for these men to suppress urges to have sex with men if they were located on the higher part of the spectrum.
To get to your comment, there is a choice for some people
, men who fall within the middle zones can have the ability to choose their identity. However, men who fall towards the extremes cannot
I wish I had the kinsey scale data in front of me but I suspect that the real world's identity data looks something like this...
You see the large peak on the right due to directional influences, AKA, homophobia.
You see the valley in the middle due to disruptive influences, aka, biphobia and anti-polyamory influences, some men are forced to choose between men or woman and get pushed to either side.
Combine these two influences and you get something like the thing I drew.
EDIT: Kk, I just realize I nerded out here >_>