I am 66, on second career of almost 20 years after 28 years in the military. I am not sure, honestly, if I know how to retire. I have had only two jobs since I was 19. It is, to put it simply, what I do. I feel like stopping will be a permanent stop with a foot in the grave. I suspect I will always be doing something. So, NO, you are not foolish IMHO.
Gunner
I was told by many that being a type A aggressive person, no way would I stay retired, but I did. We had saved some money, took lump sum retirement and never looked back,
We downsized out lifestyle, everything free and clear and have never incurred any debt. These last 20 years have been some of the best for my wife of 51+ years and I.
It all boils down as to what a person or a couple want. If they choose to work so long as able, more power to them. Me, I chose a different route, even surprised myself and still think it was one of the best moves I ever did.