If you want to work until you are 100 its your right to do so. But there is more to life than work. When you retire you can, finances and health providing, do all the things you would have liked to do during your working life but didn't have the time.
We bought a little camper van and have traveled the country. Go for walks, have picnics, cinema, theater, swimming, hobbies and loads more. You need to keep active not let the brain go to mush. But retirement is great, I can say what I like, do what I like and not what my old boss told me to do. Bugger work!