To the people who divorced an alcoholic spouse: Was that their rock bottom? Did the spouse get better? Worse?

I'm about to divorce my husband of 3 years (together for 9) whom I love and care about so much. I feel like I'm abandoning him and I feel like his drinking will get worse (though you can't drink more than 7 nights a week, but somehow I think it'll be worse without me).

As much as I love him, I'm miserable being married to this disease. If I need to leave him in order for him to hit rock bottom and get better and build a life without me -- then it hurts like hell but it's what I need to do.

So this got me wondering, for those of you who filed for divorce specifically because your spouse was an alcoholic - did they reach their rock bottom? Did they seek out AA or counseling? Did they get worse?

What happens to the alcoholic after you leave them?