Something that has bugged me for years

As much as I enjoyed the Belgariad/Mallorean cycles by David Eddings, his oversimplification of national identity (i.e., all Thulls were dull and superstitious, all Nyissans were drug addicts and overly feminine, all Tol'Nedrans would sell their grandmothers for a pittence) always jolted me out of my suspension of disbelief. Way more than, say, people turning into wolves, glowing blue swords, and Dryads.