There is a difference between having memories and recognising them as such and mentally not moving on from those "Glory Days". Which is what the OP was getting at, if I understood her correctly.
My DH doesn't go on about his time as a teacher, a student, or his National Service (which was only recently abolished here in Germany - my 2 eldest DS still had to serve. They both chose Community Service)
DH has moved on and will reminisce if asked, but has built a new life since retiring.
My parents both wrote down their life stories for us to refer to if needed, but both lived very much in the present. No doubt my father hankered after the years he spent sailing and woodworking, but he accepted they were over.