I just don't see the point of therapy if his position is "I'm going to drink" and my position is "I can't live with the alcohol".
I can't see the point of it either. This is a stalemate, and you both deserve to lead the lives you want to live. It would be the same if one person wanted kids and the other didn't, or if one person wanted to live in Mexico and the other wanted to live in Alaska. It's just a fundamental difference where one or both people are going to come out wounded , and is a perfect storm for animosity, resentment and bitterness to build.
I'm guessing your life is a bit different since you've moved out. Mine sure was. After a couple months out I knew there was no possible way I could live the way I had been living again, and it became clear fast that X's lifestyles and mine were completely different. (((HUGS)))