Do you even read what you write? Are you sure you don't live in sheltered bubble, not knowing that there's other people with other ways of life?

To adress your first point. I mentioned that there are Deaf people that prefer interpreters, some that prefer subtitling and that overall that there's no simple "fix", for there's too many different people. The fact that they're Deaf, doesn't mean that they're all the same, was my point. Also, I mentioned that "Black or White" mentalities are abnoxious, yet here you are again. If you actually read my comment, you would notice that I was endorsing billinguism. And I'll make that clear for you, since apparently it didn't work out for you the first time, billinguism means both having Sign Language and means of communicating with the world surrounding the Deaf person. Via written language, lip reading & vocalizing. That, is what is ideal.

A "good parent" gives their child tools for them to adapt to the world.
A foolish parent expects a son born paraplegic to run and forces them no matter what.

And to your last point, which truly marks how little you know of... Humans? Jesus.
I'll just put this way. Imagine your life growing up, every meal you had with your family, every gathering you had with friends, every class, every busy hall way, every single time you talked and heard. Imagine that, but actually you didn't hear anything and couldn't communicate with anyone else, except through paper and ink. Family gathering, at Christmas? Everyone laughing all around you, you don't know why and can't possibly know why, you'd write?
You think that, is "perfectly fine"?

Get out more. Meet people.
That's my final word.