I can mentally accept some of the behavior when it's illness related.
It doesn't matter if it's disease related. As a recovering alcoholic (24 years), I learned that each day I make a choice to drink or not. He has made a choice to continue drinking and this is very typical of active alcoholics. Their higher power, God, great love of their life is alcohol. Drunks choose this above all else even the most important people in their lives.