A band is like a family. There's love and hate.
You can create art that makes people feel better.
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.
You can kill somebody, but I wouldn't advise that.
Music crosses cultures and language barriers and it makes people feel good.
Take away all the emotional baggage of any band's fight, be it The Beatles or The Stones, but in the end, you just enjoy the creativity. That's what the legacy is.