As has been said the sad truth is he doesn't care how and how much he
has hurt you. He is an active alcoholic, he can't give you what you need,
hell he can't give himself what he needs.
Fantasy letter is a good option for you. It helps to get everything down
on paper that you need to say to him. Read it, put it away, read it as many
times as you need to then maybe burn it one day in a goodbye ceremony,
where you will get closure.
My ex used to tell me how his exwife used to leave him letters about
how he was hurting her. I could hear in his voice how meaningless
they were to him...if only I had really listened at the time....sigh...
I agree no contact, it will do you so much good.