They're not. But a good novel should really explore something more than "we are good, they are evil, let's fight." None of Eddings's characters have to make difficult choices; none of them wonder which side they're on or ponder their motivations in the least. They Do the Right Thing because it's the Right Thing and that is incredibly goddamn boring. A friend of mine summed up everything Eddings ever wrote as "Guy with red rock. vs guy with blue rock." Insert a billion useless goons who get slaughtered by the cohort en route to the Lair of the God of Evil, some witty dialogue, and you have a novel. Don't get me started on his Formula for Fantasy. Nope. Tell me!