Rage Against the Machine
It's a shame that the best rap-rock band of the 1990s was also the least functional. Rage Against the Machine's three albums are pretty much flawless, and they were the single greatest live act of the era. But by 2000 everything started going wrong. They booked a summer co-headlining tour with the Beastie Boys, but the Beasties' Mike D fell off his bike and they had to cancel the whole thing. Rage carried on with their own gigs, but they fought over the wisdom of releasing the covers album Renegades. Lead singer Zack de la Rocha announced he was leaving on October 18th, 2000.
"I feel that it is now necessary to leave Rage because our decision-making process has completely failed," he wrote. "It is no longer meeting the aspirations of all four of us collectively as a band, and from my perspective, has undermined our artistic and political ideal." Though they reformed as an oldies act in 2007, they remain unable to agree on future plans. Simply put, Zack doesn't want to do a damn thing, and the other guys want to create new music and tour the world.