-—You never know.-—
I’m on the downside of 75 and still serve clients two or three days a week.
For me, Clint Eastwood is a great model. At 86 he made a new movie from his office of many many years on the studio lot. To keep on keeping on enables one to keep on keeping on.
Think 90
Good hobbies substitute well for work for us. There’s no “have to...” with hobbies. To each his own.