Look closely

I do maintain that any sexuality or gender other than heterosexuality is either a choice or a disorder. You could call a disorder a disease.

I base this conclusion on logic and science. The established definition of a disorder is "something that inhibits or interferes with a normal function or an established system". Mating, pairing to reproduce is our normal function. Reproduction is a continuum of life. Living cells from heterosexuals combine creating new life that shares all the genetic history of both biological parents. No other sexual or gender relationship can achieve this unique process necessary for human life on earth.

I have presented a rational and civilized discussion of the facts.

Prove it wrong or accept it as truth. Anything else is uncivilized.