To drink or leave AA I would be uprooting myself. Sure, in principle it's possible to come back. However, anyone who has re-potted plants will know that, when you re-pot a plant, it does not necessarily 'take': the roots do not necessarily re-establish themselves. If I were to leave, I could not guarantee that I would come back, and, if I came back, I cannot guarantee it would 'take'. I had better stay sober, therefore.