The thing is, *if* he is able to become sober and work his recovery, he will be a different person. *If* this happens, it will take time, years.
You already know who he is now. No one knows what the future holds. You need to take care of yourself now, in the present.
As an aside, all the health problems you listed in an earlier post, those are all symptoms of advanced alcoholism. They won't begin improving til he detoxes and stays clean and sober; some may never resolve.