I spent xmas break one year in Florida. I stayed with a friend at her grandparent's house. They lived in an area developed and designed for wealthy retirees. One evening her Grandfather took us out for a drive to see all the Xmas lights in the neighborhoods around him. It was quite a display and we indicated that we were impressed. He said "Yeah. All the old guys around here like me used to be executives. Now that we're retired, the only things we can compete at are golf and xmas light displays.". Maybe this is what your H fears. He won't lose his competitive drive when he retires and he will only have limited arenas in which to express it. For example, he doesn't want to be the "Boogie Board King".
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver