"And how should children feel for completely disappointing their parents and going against what the parents believe? It's a two-way street."
It is, indeed, a two-way street, mlcnnnn. Love works both ways. Our children may not be who we dreamed they would be. They may not act as we would wish.
Our offspring may also not have parents who are what parents should be. Parents may not act as they should.
Disappointment. I'm sure most parents are disappointed in their children from time to time. Having a child who is gay is not the end of the world, and should not be the end of the relationship. That's just nuts.
I have an uncle on my wife's side. He's dying of kidney failure, and his wife is not well, either. They have three children. One of them is a gay man. The other two are daughters. They've always treated their son well, along with his partner of 20 years.
Now, guess who is taking care of them in their old age and infirmity? Not the daughters, although they love their parents. They have families of their own to deal with. The son has taken a leave of absence from his job as a project manager for a large corporation. He spends his days now at his parents' house, helping care for his father.
Do not reject a gay child. You will never forgive yourself.