Artists, actors, writers, speak from the depths of trauma and personal experience. I would be interested in a psych study that would put them on a bell curve with disorders on one end and positive activists on the other.
I have a suspicion it would be the same type of bell curve that occurs within the general population when a natural disaster or a 9/11 occurs.
Not all artists. Some grow up in ok circumstances. In fact, Stanislavski, the famous director of Chekov plays who also invented the much-maligned acting method, thought the best actors came from the solid middle class.
Many artistic types who grow up in dysfunctional homes just end up not doing anything important in their lives.