Does brain difference remove 'choice' from homosexuality and why we don't care

A recent study showed more evidence of a genetic backing behind human sexual preference. The gay male brains reaction to male pheromone (derivative of male sweat/testosterone) was the same as female brains reaction. In addition, the gay male brains did not react to female pheromone (derivative of estrogen). This difference in reaction could indicate a brain difference predetermined before birth or at very early childhood. If this is the case, it indicates genetic source behind sexual preference. And if there is a genetic reason behind sexual preference, it removes the idea that there is choice in being gay.

However despite all this, does it matter whether homosexuality's source is genetics or choice? I think not. Interfering in (or discriminating based-on) others non-harming behavior is distinctly un-cool.

-- added 9/16/05 --

Many scientific papers have been written to try to understand how homosexuality arises. This is good, but only as a distracting side-argument to counter flawed arguments by social conservatives who insist being gay is a choice and can be changed. When confronted with the general idea that two adults should be able to do as they please in the privacy of their own homes, social conservatives retreat to saying they don't see why government should support gays by allowing them to marry. The argument then revolves around children and family and protecting this unit. But there are plenty of heterosexual couples who don't have children. Why does government support this simple potentiality without it actually becoming a reality and also, laws do not currently preclude gay couples from adopting or going to a sperm bank, and there are currently many gay parents. Why not support them?

-- updated 02/21/06

An Advocate article discusses a UCLA study where it appears the mothers of more than one gay son tend to have turned off large portions of one of her two X chromosomes. It's bio-speak for: there could be a genetic basis for homosexuality.