Okay, just because you think can live that long physically doesn't mean you'll be there mentally. You can do all these transplants to keep your body going, but I don't think we've figured out how to replace the brain without killing someone since I doubt healthy living and organ transplants are gonna keep the brain healthy enough to be mentally fit to do much of anything.
Also, I personally wouldn't want people like them to be living that long.
I don't. They're crazy, but crazy only gets crazier with age.