I'm about your age. I remember the family of five making a weekly trip in a 20 year old camper to the local burger joint where we would buy 6 for $1 hamburgers that had nothing but a burger patties and a squirt of mustard and ketchup on them.
We brought our own fixin's to save money and turn those plain burgers into DELUXE.
Dad had an almost dead center middle class income at the time (hence the 20 year old camper). How many families today take a head of lettuce, a couple of onions, and a tomato to McDonalds to save a buck on a burger?
By the way, those were some good burgers.
On your comment re bringing your own fixin's - -
I drive by the carcass (now an used car dealer) of an old Burger King about once a week, and it always brings me back to going to that place after high school (it was at the entrance to the school).
They made the mistake of starting one of the first "fixin's bar" where you could buy your own small hamburger and load the thing up with lettuce, cheese, etc., etc., FOR FREE!!
Not a good idea for a place next to a high school.