Skewering the children makes for an easier night of nannying.
And then an even easier rest of your life.
You took care of the children, now the state takes care of you. *
* Or the other inmates do.
Especially if they make an extra-long shiv for you and others like you.
But that's more of a prison-half-empty mindset.
Whichever the pessimistic one is, for a prison.