The Magician's Nephew

It's cool to know how Narnia was created, how the wardrobe, witch, and lamppost came to be, etc., but there's not much of a story here. Might've worked better as a short story. Without having read the rest of the Chronicles apart from Wardrobe, I'm assuming Digory, Polly, and Uncle Andrew are throwaway characters? Here they are merely vehicles to get us to the creation of Narnia.