One thing about aging is that we each do it differently. I have friends my age that are really young and some that are really old. I felt really young until I fought off cancer and now I feel pretty darn old, but my mind isn’t thinking I’m old until the bodily limitations hit.
Some people are physically, mentally and temperamentally happy working in their 70s and even 80s. Others aren’t,
I retired at close to 67. It has been fun, but I didn’t save enough and now, at 74, I don’t do some of the travel and other modestly priced diversions I used to do.
I started to retire but after working without a break of more than a few days at a time over 50 years I found out that I was not a very interesting person. I didn’t want to travel, spend time with friends, volunteer etc. so I just kept working.
Actually, I like my work and I am glad to have something useful to do.