The typical life cycle for a rock band tends to go in several familiar patterns, pretty much all of them featuring the band’s survival teetering on a knife’s edge at all times. Members leave or quit for whatever reason, creative differences cause splits and/or the band just fades away due to lack of interest.
Every artist, if they stick with their creative endeavors through a period of years, will go through an evolution in their creative and personal lives. We all do. But what makes creatives unique is that they are doing so publicly, for anyone willing to listen or look.