What could people possibly have against the seemingly harmless singer-songwriter John Mayer? Well, as it turns out, just about everything. Mayer rubbed people up the wrong way by claiming to be pure and innocent at the start of his career, stating that he'd never drink, take drugs, date celebrities or otherwise distract himself from his music. A few years later, after a relationship with Jessica Simpson and a couple of badly advised drunken interviews in which he used racist language, he looked both a fool and a hypocrite.
To be fair to Mayer, he recognized the error of his ways shortly afterward. He took two years out of the spotlight to refocus on his life, and later admitted in an interview with Ellen DeGeneres that he'd 'lost his way.' He's also happy to help out with charitable causes; he's set up the 'Back to You' foundation, which raises money for healthcare, education and the arts. Many times, he's donated his own equipment and memorabilia to charity auctions for the fund.