Once I had "Artistic Differences" with a band.
We were arguing about what music to add to our set lists. We were doing Bon Jovi, Whitesnake, and such... I wanted to add a song or two from "Ride the Lightning"... they wanted to add more Poison to the set list.
I told them that one Poison song was plenty for me... they told me "Poison is the future of Rock and Roll... in a few years, nobody will even know who Metallica is."
I wasn't asked to leave exactly... it was just a blanket statement like "We don't know if this is working out anymore..." to which I replied "Fine. Now I don't have to play some of these shitty songs anymore..."
I can honestly say I've never played a single Poison riff since.