Unfortunately, good bands come and go no matter how big they become all the time. Personal conflicts, outside responsibilities, frustration with the industry, among countless other things all take their toll on performing musicians. While fans often lift them up as super-human, they are not. Most musicians I know, big or small, share a single, what should be obvious goal: to share a piece of themselves through their undying passion for music. The Hollywood glitz and glamor media crowd would have you believe it to be driven by money, fame, girls or whatever other vice fascinates the artist being the driving factor.
