You may think it is a "choice" but it simply is not.
This should be simple for you to understand since you didn't choose your gender attraction either.
Science agrees. It has been scientifically proven that the brain and the hypothalamus is gendered within the first trimester of a pregnancy and that the gendered brain may not match the body's gender due to androstendione, a stress hormone similar to testosterone that binds to receptors that testosterone should have bound to creating a female hypothalamus in a male body, creating a third gender class - males, females and homosexuals.
Why did God give me a larger hypothalamus? Why did God create me as a gay male? Why does man continue to persecute a minority gender class God created?
Of course I don't expect you to have the capacity to question the legitimacy of your prejudices; A quick read of your other comments on HN showed me that you're also racist..