Being late-deafened, I wish my family would have learned to sign also. Even my brother....he would not ever talk to me via phone, said he could not "talk with a machine".....Now as I've gotten older, and my eyes not as sharp as before, I'm relying on ASL much more, and my kids know it, not fluently, but they know how to communicate with me.
As for us late-deafies...my guess is that we're expected to keep on "acting normal"....(that's the way it was said to me!)....So the family keeps on talking, friends keep on talking....no one wants to do the ASL....the family gets exasperated when you ask "what's going on?"...as if it's the dumbest question evah!....
One word for it all....sad.