You have every right to be angry. No one else has the exact situation you do, so your emotions are not something anyone can tell you to have or not to have. I also go through days of extreme anger, even when my AH seems to be "controlling" his addiction. Sometimes he can be drinking ice water, and I still have visions of the last time he staggered around the house and passed out.
There is no solution that works for every person, but I have found that concentrating on my own health and happiness gives me the strength to let him work on his.
Unlike you, I am still with my AH. There are days when he has a beer or two, and there are times when he gets "plastered". I have detached myself from his drunkeness. I refuse to associate with him while he's drunk and just find something else to do. The only concession to that is that if he calls for a ride home from somewhere, I will silently provide one. That is to protect any other person who is out there on the roads, not to protect him.