As long as you want to pay to see a band, what makes the band want to get better? Nothing! Really! The Stones are, God knows, horrible beyond horrible, but it doesn't stop the fans from paying money to see them decompose in front of your very eyes.
Music crosses cultures and language barriers and it makes people feel good.
A band is like a family. There's love and hate.
You can create art that makes people feel better.
You can kill somebody, but I wouldn't advise that.
I'm a blues guy and I listen to blues all the time and blues is timeless.