Spend that energy on yourself instead of him and let him find his own way.
Your love and understanding are falling on deaf ears at this point. And is he treating you in as loving a manner?
The drinking is NEVER and excuse to treat someone poorly. Don't take it as one. He sounds like an angry drunk. Not all alcoholics are like him.
Living in that situation sounds draining and what are you getting out of it?
Just questions to think about.
Hope you find your own way.