Allow me to clarify-
GID is a real disorder, but Transsexualism itself isn't.
GID is when you suffer psychological trauma and become obsessed with changing your physical gender because your brain thinks it's one gender, but your body is the other gender. I have a couple friends who suffer from this, and since they can't just magic away the trauma and stress that comes from the mind VS body disparity, so they have to change their physical gender to fit their mental gender to calm down and 'correct' the disorder. They just can't help it.
However, Transsexuality itself is the choice to become the other gender, and can happen with or without GID. I've also met others that don't suffer GID, and is fine with their current gender, but still would prefer to be the other gender, so if they can, they'll switch or at least just dress and act the part.
For those who compare Homosexuality to it- Homosexuality isn't a disorder or disease, merely a "mode" in our genes that determine what we see as "love". Not lust, but love. Most of the time, it's born with, but some people do actively choose to swing the other way as well.
By the way, it's not just bonobos- over 200 different species of animals actively express homosexual affection. Not just 'domination' or lust as Christians keep trying to claim it is, but actual affection, loving couples. In fact, the animal with the highest homosexual ratio would be the Giraffes. You know how Christians love to use sheep and lambs to symbolize themselves (what with blindly following the herd)? Funny thing- sheep also practice homosexuality a lot, and sheepherders even gripe about this, because the rams would often ignore the breeding female in exchange for loving each others.
Love has priority over lust and sex. Sounds about right. Anyone agree?