Yeah... I loved them all when I was six, until the last book which I thought was weird and depressing, then reread them at 12 when I was having Major Religion Issues and it was like cold water in the face. So I totally know that "TERRIBLY CLEAR" feeling of which you speak. I don't object to the fact that they ARE Christian allegory- but I sure as hell object a LOT to several of his specific points, you know?

That said, Wardrobe and Dawn Treader (the first and third) are both really great children's literature, without the more objectionable bits of theology. If you ever do feel the need to revisit.