I read the book "Charlie and the Chocolate Factory" as a kid, and even then I found something a little distressing.
It's not that various kids where shunted off for personal vices that would be a bit of a stretch to categorize as moral shortcomings. It's not the strangeness of the oompa loompahs. It's just how eerily pro-slavery it felt.
The Oompah Loompahs working in the factory make up the entire population of Oompah land, or some such nation. They have an inherent, undeniable craving for chocolate, but cocoa beans are rare where they live, so Wonka just shipped them all over to work, where they get a chocolate bar every day.
In other words, they're a whole population transplanted, being paid in beans. Forget all the drug imagery stuff. (Yeah, you totally need to be high in order to think up the idea of a fat kid falling into a river of chocolate, or singing midgets. Such things are beyond the realm of human comprehension unless aided by powerful hallucinogens. 9_9 ) This is the real half- a-worm in the caramel apple that is Willy Wonka and the Chocolate Factory.