There's a bit of a prisoner's dilemma working here too. If you're the only family that lets their child wander, your child is far more likely to be the one tha

There's a bit of a prisoner's dilemma working here too. If you're the only family that lets their child wander, your child is far more likely to be the one that's abducted. Therefore nobody lets their kids wander, so everyone's kids have a substandard childhood.