Respectfully...
We know that often with twins that one can be gay while the other is traight. So...if two people with identical DNA wind up differently, how can you say that these things are determined at birth?
Open your eyes and observe the real world rather than your preferred answers.
I do understand that based on DNA findings, twins with identical DNA can wind up with different sexual orientations. But I still have questions, and I haven't heard/read anything that may explain the following. For instance, you're born a male, but very early in your childhood, you realize that sexually you're attracted to other males. You may or may not display feminine tendencies, but you're only turned on by your homosexual feelings for another male. And so you appear to all the world as a heterosexual male, but your true sexual preference is homosexual. Now, baring any homosexual abuse at home or from outside influences, what determines your sexuality? If DNA is not the key, then what determines our sexual preferences?
I'm not a scientist, but a person who has questions. Your sarcastic remark about “opening my eyes and observing the real world, rather than my preferred answers” is not necessary. We're here on FR to read posts, to learn and to feel free to ask questions, in the hopes of finding answers.