Because of their simplicity and their visual appeal, childrens books outsell all other genres.
Roald Dahl amongst many others wrote his books so they would appeal to adults as well as children.
Throughout history, books for children have been on the grey side of black humour.
You may be thinking by now that I have gone potty,sitting here pontificating but I assure you I am only trying to gauge your opinion about the underlying humour that lies beneath the writings in childrens literature.
Do you honestly agree that there is something in this field of thought or are people getting the wrong interpretation of such a simple little fairy story.