I agree with the ideas behind your post, but the world is a little different than it was when you were a kid. There seem to be a lot more predators for children out there these days and they are watching the patterns of young kids like this, walking alone, every day after school.
You hear of an Amber alert, what...once every couple of weeks? This in a nation of 280 million. 30 years ago, you would probably never hear about some kid that disappeared in some small Texas town. Now it is broadcast everywhere.