Earlier quoted context omitted.
I got lost in Valletta on Malta during a family trip when I was probably around 7 or 8, and it's one of my proudest and most formative memories from that period of childhood, even if it was scary as hell. Valletta occupies a tongue of land thrust into the ocean. I got lost in the middle of the city, and had to come up with a plan for how to get back to my parents. I realized I'd probably be able to find it from the p…
A friend of mine with interesting parents had an experience like this, except it was planned by her father! He told her they were going somewhere together, then dropped her off at a random metro station and told her if she couldn’t make it home in an hour she should call home with a pay phone, and here’s a quarter. She brought it up in a pretty resentful way (understandably, because it’s basically abandonment?), but…
But just doing it with minimal preparation... That's bad parenting. I doubt that experience alone is the reason for being fiercely independent - that usually (and unfortunately) comes from the person being unable to rely on their care takes for their needs as children.