Jefferson Airplane's Grace Slick believes something that few other veteran artists would likely agree with: Aging rock stars don't belong on a stage. "All rock-and-rollers over the age of 50 look stupid and should retire," she once said. Slick is now 72, and since a short Jefferson Airplane reunion tour ended in 1989, she has mostly left music behind to focus on her visual art. One exception was a brief appearance at a 2001 Jefferson Starship show in Los Angeles. But unlike most people on this list, Slick continues to talk to the media, and she's often photographed at her art shows.
Barrett Scale: 1. Refusing to tour for 23 years is no small accomplishment, considering all the money she could have made in that time. Slick has guested on others' albums every once in a while, but her last real LP was Jefferson Airplane's 1989 reunion album. But she still can't be considered a real recluse when she gives interviews and appears at public events.