I retired at 60, the earliest I could have retired to receive pension benefits. I would have retired earlier if I could have. I have so many interests and the world is full of interesting things to do, that even now I don't feel I have quite enough time to do all the things that interest. But everyone is different. some people get great satisfaction from working right into old age. There is nothing wrong with that if that's where one's happiness lies. Do whatever you do with gusto, whatever that is.