I'm not looking for sympathy. I write my thoughts and feelings, both as a form of awareness and as a way of sorting things out in my own head. And the conclusion I came to was much the same as you just said, unless he wants it, there's really not anything I can do, so I've gotten off the train.
Yes, others on here are and have tried Al-Anon, and for every one of them, there's countless others that are struggling and haven't gotten there yet that may find something of themselves in my words.