Sexual orientation, whether it be heterosexual or homosexual, does not appear to be something that one chooses.
Recent studies support what many gays have always suspected.
They indicate that sexual orientation has a genetic or biological origin, and is probably determined before or shortly after birth. It has been found in many cases that if one twin is homosexual, the other is also homosexual. This study suggests that sexual orientation has a biological substrate. While this study has not precisely isolated a gay gene, it suggests that sexual orientation does have a genetic component. The assumption that homosexuality is a choice is insulting to the millions of gay and lesbian men and women who know their sexual orientation is not based on some decision they made, but is based on something as innate as the color of their eyes.