You can't just spew off statements at the top of your head and claim them as facts.
A few months ago in the Toronto Star there was a research article about the connections between hormones and being gay. The study found that in gay men, by smelling the scent of another males sweat, released the same sexual hormones that straight men did when smelling a woman's scent
This study was done over a long period; they also measured the hormones of pubescent boys when they smelled a male and female scent and used this to predict later sexual orientation. By testing younger boys, there is less risk to assume that gay men are aroused because of conditioning, rather than genetics.
And I doubt this is the only research completed in this area
Being gay may part be choice but probably a greater part of it not a choice
PS - Why whould anyone CHOOSE a life of inner-turmoil and potentially family-breaking results?
Did you "decide" to be attracted to members of the opposite sex? Did you one day sit down and say, "Well.... I guess I'll go for the men" - No, of course not, it was a natural feeling to you