It's not a matter of it being right or wrong, it's a matter of parents making decisions that they feel are in the best interests of their child. Look, most people recognize that it's difficult being gay. You say it yourself in your reply. I'm gay, and I'll tell you it's difficult. The woman who is offered this treatment in the doctor's office knows this. She can't change society to make it ok for her child, but she can change her child's sexual orientation. And many will, and the more who do so, the lonelier it will be for the children of those who don't.

Simply put, you can't expect people to put high-minded, abstract values like "celebrating the diversity of humanity" above their own children's well being.