[NittanyLion]

But then I don't know if it would do any good. Afterall, it seems to me, that if the parents cared, they would already know what the kid is doing because they would be right there, watching.

I think many parents make the absolutely rational decision that it's a mistake to completely shelter their children right up until the age of 18, as you seem to think is appropriate. That doesn't mean they "don't care" as you suggest.

[Sloth]

There's a difference between "sheltering" and being generally aware of where & how a 13yo spends his time.

[HOTTIEBOY]

Of course I am not implying that the don't care. Seems to me they would know, or try to be as nosey as possible.