I fall into that age group. I've been a militaria collector for 45+ years now. This Friday, I'm opening a year-long exhibition on Canadian Peacekeeping at the Oakville Ontario Museum. Apart for occasional presentations to Cub Packs for Remembrance Day, it's about the only use I've made of my collection.
Last November I retired, not by my own choosing. Given my family situation, which includes the care of my soon-to-be 90 mother-in--law, to whom we owe our comparative freedom from 1990 to 2005, I probably couldn't have worked much longer. Our sons have followed us into my wife's and mine respective professions, and are working on establishing themselves, living at home to save money, and helping out.
But when I go on Youtube and play some 1960s music, I'm still that awkward teenager making model cars and airplanes.