You don't have to be afraid of bad things happening to your kids from "bad people" to decide they shouldn't walk by themselves. You might decide that it isn't

You don't have to be afraid of bad things happening to your kids from "bad people" to decide they shouldn't walk by themselves. You might decide that it isn't worth the hassle of "good people" like the cops or child protective services threatening to take away your kids. So even if you think your children are reasonably safe from people doing bad things to them; the risk of the government causing you all kinds of strife makes you reconsider letting them have an unsupervised walk.