The sober me says this isn't something you should feel obligated to put up with. I know that I make others in my life feel the way you do. I can say that there might be ways to give him a wake up call. Tell him you're leaving. Lock him out. Call the police if he is violent. In the end, it will be his decision to sober up or decide alcohol is his true love. I am struggling with this myself from the opposite side. I have shown everyone around me that alcohol is my priority. Now I am trying to pick up the pieces and hoping that I have hit rock bottom, so that I can begin to rebuild and repair what I have done.
I wish you luck and, more importantly, strength to deal with this situation. Do you have a support system in place? Family, friends, or a therapist that you can discuss these issues with? It would be worth looking into, IMO.