I would look for another therapist who is familiar with addiction.
really? this is presuming you know quite a lot about someone you've never met nor worked with. a rather trite answer. were it not for my therapist, i would still be getting wasted with this guy - i would have not ever come to al-anon or even THOUGHT i needed to work on learning to be alone and my codependence. sorry, but i just don't appreciate people throwing out little comments like that when i'm really working quite hard here.
IMO, that email you posted here still has a ring of him possibly being able to worm his way back in, but that's just my opinion. I still think something more concise that tells him that this is over, period, would be better. No discussion of you hoping he'll be better, because then he'll just come back with, "I promise I'll be better from now on." Which you know won't be the reality. And the cycle will continue.
yes, i thought it might have that too, which is why i posted it here to keep myself honest. i will work on another, more concise one and post it.