Not trying to generalize and no two people and their circumstances are the same but a key characteristic of Adult Children of Alcoholics is that they are very "all or nothing" oriented, and I have found that people who are artistic and who are creative tend to crave that "ah-ha" feeling/moment that comes with creativity, and sometimes they find a replacement for that feeling (or when they don't have a good outlet for their creativity) in drugs and alcohol, combine these two things and you have a recipe for addiction, dependence, and alcoholism, IMO.