MJ definitely lead a sad life. He obviously had mental issues and couldn't handle the fame thrust upon him from a very early age. I've never seen a celebrity who was less press-savvy...he never came to grips with how his actions and inactions would be perceived in the media. He was off in his little bubble, and because of it eventually became a recluse. He's the Howard Hughes of music in many ways.
Rest in peace, MJ. You were, are, and forever will be The Man.