Up front I'm absolutely certain that homosexuality has genetic origins. I'm also equally certain that choice and life experiences do play some role in determining sexual preferences as well. Some people are going to be so far towards gay or strait on the spectrum that they effectively don't make any choice about it. They are absolutely born to be one way or the other. Other people are more towards the center, they might call themselves bi or they may never think of themselves this way their experiences and choices might steer them clearly towards one sex or the other despite their genetics. But who cares? If you've decided that being with a man or a women regardless of your own gender, will make you happy than no one has any business interfering with that. Why has the gay equality movement made the inflexibility of sexual orientation such a lynch pin in the argument? Maybe they haven't maybe this is just my interpretation because the anti-gay side of the argument's claim that sexual orientation is purely choice has created the illusion through retaliation of the gay rights proponents that this point is central to their argument as well?