Crazy, was thinking about this today. I was having a discussion with a family member — who retired early — and is very big on people of a certain age calling it quits to enjoy retirement. The way I see it, when you love and are passionate about a career, you aren't rushing to leave. All things considered, when one retires, what is there to do at home? Chuck aside, in the average citizen's case, retirement often means sitting at home, watching daytime television, and waiting for the eventual. Especially if their family doesn't live close and their friends aren't in good health or have passed, going to work is what gives many of the elderly the drive to keep going.
In Chuck's case, I'm sure he has decent wealth to travel and live well. We aren't privy to his personal life, so I'll guess that he really just loves his job. It pays well, isn't physically taxing, and simply requires him to sit and read a pre written script for about 22 minutes excluding commercials. Plus, Chuck's usually on about 3 out of 5 nights a week. As long as he remains in good health and isn't demanding any dramatic salary increases, lets see how long he can go for.