That is a judgment on your part. There is no retirement in nature. If you keep doing what you love when you are "retired", it will be to your benefit. Both my parents teach, my father does something he likes for the first time i think. Could call it sad but why?
Obviously some professions like teaching, medicine, and a few others are different because they actually benefit society. As opposed to middle managers in a megacorp only working hard to make anonymous shareholders richer. When that guy is gone, they’ll be replaced within a couple of weeks and forgotten as they were just a cog. That’s when it’s sad to keep working imho.
