My dad tells stories of snowstorms back in the 70s & 80s where they would leave their truck at the end of the driveway with the keys in it and unlocked.
We live very rural (my grandparents were my neighbours growing up), and snowstorms could get bad. So everyone left their vehicles out with the keys in case someone broke down on the side of the road so that they could hop in the truck and turn it on to stay warm. Never had a vehicle so much as damaged, much less stolen.
I think your experiences are clouding your judgement. Just because you grew up then doesn't mean you have knowledge of everyone who grew up then, nor on everyone growing up now.
I am not much younger than you and I distinctly recall parents and police responding to several incidents. But same deal, just because i saw it doesn't make it universally true.
Maybe it was also local to where I was. It was just my general experience that it happened enough to be quite surprising that not one thing was done about it.
For example we had a neighbour when I was growing up who was known to have lost his teaching job for exposing his penis to his students. He exposed himself to my mother one day, and apparently to several other neighbours. His wife was a piano teacher, and despite what he had done pretty much everyone went to piano lessons with her. He would meet you at the door in nothing but his underwear. Nobody did a thing about it. It just seemed very normalized to me.
I grew up in this era. I didn't know a single person whose parents wouldn't care if their kid was being molested by strangers in a park. There was an entire Stranger Danger topic that was frequently discussed with kids by parents and schools.
Just because you grew up in an era doesn't mean that you got the full experience others got. Kinda what I'm saying.
In the south (or for young girls most places) for example, this was definitely closer to the norm. Parents obviously would always SAY that they would always try and protect their kids—and maybe they would try—until it got to the part where they were actually molested. Then a lot of parents didn't believe or want you to speak out 🙃
Statistically, this was more often to happen with people you knew, I'll grant.
Flashback to riding the bus home from middle school in Kentucky when my slightly older friend confessed that she'd been raped by a cousin but she was still a virgin because it'd been anal.
I didn't think I gave particularly good advice on that topic in 7th grade.
I did that well into the late 90s when I was staying with my grandparents. Nothing to do with snowstorms. If someone was stupid enough to risk walking that far out of the way, and getting shot, they probably deserved that old Honda.