@murkywaters
Sounds like my husband in the beginning. I'm not sure it is any better a few years later but I just try to pick my battles .His dr put him on Sertraline which seems to have taken some of the edge off. Still, he will say something so confusing to me and when I try to clarify by asking a question he gets angry. I've learned to just be quiet. He does not realize that what he has said is "off" or maybe even opposite of what he means to say. One day he pretty much on one occasion spoke gibberish. I was afraid he was having a stroke. Watched him for a while. I don't much enjoy being around him either. He won't do anything except play golf maybe once a week and he mostly complains about the other players...all but one. Then he sleeps. He has become very thin and he says the Sertraline affects his stomach. It may but I've asked him to talk to his doctor. Does he? I doubt it. He has always had a persnickety stomach. And his griping has increased - - much like that of his late mother.
Today he agreed to do something!!!!!We did and he made it absolutely no fun. He showed no joy and I could tell all he was doing was watching his wristwatch. I made the best of it. He's asleep now and I enjoyed getting out, walking a little and enjoying the sunshine of a beautiful day.
I, myself, had a check-up last week and talked with my dr. I'm going to try to book him with a neurologist at a place she suggested. It will take a long time to get in but I must try.

I feel for you. I'm living a very similar life.