^ My concern is that my ex has sole custody of all three of my kids.
She has been known to lock herself in her room all day and let them do what they want, both inside and several blocks down outside.
She has also been know to leave them at home alone while she goes out and gets drunk with her friends, and boyfriends.
My kids are ages 12, 9 and 9. But my ex started doing this a couple of years ago.
I don't have a responsible adult watching over their shoulder, policing what they do on the internet. And I suspect a lot of kids don't.
THAT'S why I worry.