When I was growing up, at a time when California was still a red state, Halloween was strictly a kid’s holiday. When we outgrew trick-or-treating, we would do things to scare trick-or-treaters such as setting up contraptions that would make it look as though ghosts were flying around our house.
Today, only Christmas is a bigger commercial holiday.
I remember it that way too. In the '50s and '60s one quit doing trick or treating by age 11 or so. Now we have 18 and 19 year olds coming to the door, I give them nothing.