Glad you got out of that situation when you did. He is a very sick man. You're 28 years old. Do you want to spend the best years of your life taking care of someone who wets the bed, wets the couch, takes money out of your pocketbook, lies to you, screams at you, staggers home with his weight on you?
That's what you would have to look forward to. He's shown no sign of any desire to stop drinking, and some never do.
It's better to be living with your parents than with a hopeless alcoholic.