Oh, yes, I remember rambling around the neighborhood for hours without my parents knowing exactly where I was. I remember walking clean across town to get to school. I remember my mother sending me a few blocks to the grocery store, or the library, or the post office. I remember my mother telling me never to accept rides from strangers, and having a fit the one time that my brother did. I remember seeing the "Have you seen" posters in the shop windows about the little boy who disappeared from a nearby community when I was about 10. His remains were found in woods a year or so later - it was the first time I heard about that type of predator (they got the guy that did it). I remember one of my best friends talking about her "creepy" next door neighbor. I remember moving to a different community when I was about 12, and being warned by another girl about the behavior of a certain gentleman who was well known in the community.
It wasn't until many, many years later that I understood why my mother didn't mind my brother being around a certain relative, but she watched me like a hawk when we were visiting them.
I'm also 51.
Maybe it wasn't the times that were so innocent, but rather, the minds that were living them?