I think you're onto something here. We do a lot to protect children, but we've outsourced that protection to institutions—police, laws, politicians—rather than building it into our communities. If we had stronger communal networks where neighbors actively looked out for each other's kids, parents would feel comfortable letting them roam. Without that social fabric, we're stuck with a binary choice: either rely on law enforcement to intervene after something goes wrong, or keep kids sheltered at home.