The post-presidency, as Jimmy Carter and Bill Clinton have proved, is a win-win. Money, Nobels, the ability to leverage your global celebrity for any cause or hobbyhorse you wish, plus freedom to grab the mike whenever the urge takes you without any terminal repercussions.
After so much reality TV and confessional celebrity interviews, the public is tired of accessible stars. Who needs them to be 'Just Like Us?' 'Just Like Us' means just as boring as we are.