Comment Google: "C is for Lettuce" lyrics (Score 1) 477
(I'd post the lyrics themselves, but Tim Crist, a.k.a. "Worm Quartet" packs a lot of lyrics into one song.)
On top of everything he sings/raps/screams about, another cause comes to mind and it's the parents' own damn fault for this, because they won't stop thinking about the childhood injuries. To prevent boo-boos at school, athletics programs get pared down to sub-Special-Olympics levels. Playgrounds get dismantled because someone could get hurt on them. Public ball fields and open spaces are either infested with drug dealers or more profitably developed into McMansions.
If the thought of sending children out into that cold, cruel world to get some exercise makes you at all pale, clammy, or weak-kneed, then congratulations, you may be part of the problem. If you've ever voiced those concerns and made other parents afraid, then damnit you are the problem.