Spoken like someone who does not have any kids. Newsflash: Even the best kids don't always listen to what mommy and/or daddy tell them. Furthermore, I'd say this is also to prevent unintentional access to nasty stuff. You can't sit there watching over their shoulder ever second they're online. Put the computer in the living room, sure, but it's not just deliberate access to the more visceral parts of the internet that you'd need to be worried about. At that age, it's probably more about the kids not realizing where they're clicking until they're watching 2 girls, 1 cup.