Most adults, unlike most children, understand the difference between a book that will hold them spellbound for a rainy Sunday afternoon and a book that will put them in touch with a part of themselves they didn't even know existed.
When I was writing for children, I was writing genre fiction. It was like making a good chair. It needed four legs of the same length, it had to be the right height and it had to be comfortable.
Writing for children is bloody difficult; books for children are as complex as their adult counterparts, and they should therefore be accorded the same respect.