Male and female sexual fluidity are expressed in ways that may not yet be showing up on paper. If a guy marks a box on a survey saying, yes, I've been attracted to another man, or, yes, I've had sex with another man in the past year, it may not be at all the same thing as when a woman checks the same box.
Many people seem fixated on the fact that the actual cause of homosexuality has not yet been established with any degree of certainty. As someone who likes to understand the reasons things occur, I respect and appreciate the curiosity. However, the ultimate result remains the same, regardless of whether the cause is genetic, environmental, or some combination of the two.
Gay people have to be courageous to accept ourselves, be honest about our feelings, and live our lives. I struggle with that courage every day, but when I read the bull**** that people say, I just want to stand tall with my chest puffed out and say, "I'm a homosexual and there ain't nothin' wrong with that!"