An excellent point found in Dan Kois's contribution to Slate's Book Club on Harry Potter and the Deathly Hallows:
[Y]ou worry that those who judge the book as children's literature give short shrift to Rowling's work. I disagree with you a bit; I'm judging Harry Potter and the Deathly Hallows as children's literature, but in doing so, I'm putting it up against some of the greatest stories I've ever read, stories that inspired, educated, and exhilarated me as a boy and as an adult.
I couldn't agree more. While I'm all for literary analysis and criticism, shouldn't we judge a work of children's literature as such? Especially in this phase of the book's lifespan, let's enjoy it for what it's meant to be first.