Without our caps where would we put all our 'stuff' when we get to our hotel rooms?
First thing off, cap, then into it goes wings, slides, wallet, ID card, earplugs, hanky, tie, loose change, room key, two for one drink coupon etc etc, I'd lose way too much of my 'stuff' if I didn't have my pilot's cap.
Hey, thanks BH, perfect - retired last year after 35 years, caps were made obsolete in my company 15 years ago but I would still carry mine just for that purpose, up until my last flight.
Finally someone with a practical view