I think that even if you retire, you will continue to make iterations and inherit classes inside your mind, when you'll see a mixer blink lights and stop itself you'll wonder its source code (Fortran, Assembly, C++... no matter), there will be a moment that you'll think "...but if that QFtp instead of doing like that would...", and you'll watch the life filled of objects everywhere.
Be aware that this is not bad.
This just demonstrate your great programming mind which is now enured to normally think like a program.
Teach your clues to whoever want to listen them, because from such a long experience everyone has just to learn!

Have a happy retirement!
Good bye pal!