Dear Pomelo
I am so very sorry for your situation. Your husband sounds like a very sick man.
I have come to view situations like ours in a similar way to Tuberculosis. Now matter how much you love your partner, if you don't move away from them, you get infected. Unfortunately, partners of active alcoholics sometimes die of stress before they do.
I know this is a difficult time for you. You are SO fed up, but the prospect of deciding to end the marriage seems daunting.
Please keep coming back for support.