This is why I love the elves in Eberron so much. They have a strong culture of ancestor worship, and practice the only "positive" form of necromancy. Positive in the sense that it does not rely on magic from the world or others, only yourself and the object of worship. By doing so, they maintain a court of their deceased who continue to govern and advise the nation.
Sure, you can learn how to fight well with a sword in a few years, but it takes a dozen or more to learn how to fight exactly like the long-dead patriarch of your family line.
After spending decades learning how to be like one of their ancestors, they often go out into the world to walk the same paths.