Damn, my whole country must be guilty of neglect then!
Welcome to America where you must watch the kid every second until they turn 18, except at the moment they turn 18 they must be booted from the house to figure everything out all at once with nothing more than a minimum wage job, a gun, and rents that reach the stratosphere.
This must be a regional thing?
I live in New England and I always see kids out and about with no adults around supervising. Especially from 1-3PM on weekdays when school lets out. Maybe a side-effect of walkable infrastructure.