Comment by II2II

> (Speaking as a parent of three) why can't we just leave all responsibility to the parents?

Then I'm sure that you appreciate that there are both legal and informal checks in place ensuring that you can take responsibility for your children in the offline world. For example: I would be surprised if your children were able to play organized sports without your permission. Failing to ask for permission would deny you the responsibility of protecting your child as you see fit.