lol, I just dropped my recommendation after reading a review of the book. Really I shouldn't recommend books that I haven't read myself. The reviewer stated that the book does not place a strong enough emphasis on just how much an affront to God human sin is. That is critical thing to get your mind around if you are going to come to terms with the problem of pain.
I'm with you on the need for deeper thought, but for beginners its helpful to read someone who takes a more pastoral approach. And from what I've read and hear from Keller in the past that's exactly the kind of approach he takes.