This so-called art form of tattoos seems to be a wild trend. One day we may see booths to get tattoos removed. Who knows?
In a 2004 film called MINDHUNTERS there were a group of FBI trainees. They brought up the fact that those who have tattoos are IN REVOLT with their parents (as per actual FBI profiling). I thought that was interesting. Art expression could—in fact—be a release of emotions, so it makes sense.