The first reason is to teach them to live their lives, in accordance to the laws, commandments, and ethics of God.
The second reason is for their own safety.
An article on the horrific incompetence , cowardice, selfishness and tyrant-bully-failure of the Texas lawmen:
Protect your children.
Protect your children from all the Satanists, ready to deliver spiritual or physical death – or both – to the little people God trusts you to shield and guard and guide and nourish.