A few more creepy things about children: They want to talk to you; about many things (sometimes at once), but not one of those things is remotely interesting. They are often sticky or dirty, even when they don't look it; and they want to touch you and your things. They are walking germ vectors. Think about it; that last one in combination with the previous two and everything Proto said. Suddenly that childcatcher from Chitty Chitty Bang Bang isn't such a bad guy.
When I was little I did all manner of monsters eating people pictures because I was pretty much allowed to watch any violent film I wanted (but no sex! THAT was taboo!). Hell, I saw Die Hard and The Thing when I was around 8. And I never ONCE got sent to the school counselor! Of course this was the 80s and my school was pretty seedy. Anyways, yeah. Kids pictures can be pretty messed up. A miracle really that I grew up fairly normal. Mostly.