I used to go to my friend's house when I was 8. It was through the woods, across the railroad tracks, and about 2 miles down a fairly busy residential road with no sidewalks. By 13 I went anywhere I wanted. Even on the city bus or whatever.

Most of my life the rule was "be home by dinner" (6pm)

Also I stayed home alone and watched my little sister after about age 11. I had a single father.

My friends and I also played with explosives--we got into one buddy's father's black powder stash--but the only casualties were one guy's eyebrows. And his pride, once his mother noticed.