Dwarves really get the short end of the stick. They're not "greedy" for digging too deep, it's literally what they were made to do. Their whole economy depends on mining. What do you want them to do, grow crops? With what farmland? The elves and halflings took it all. And elves never awaken ancient evils of the forest by growing trees too tall, and halflings never face the consequences of their greed in eating too much. Dwarves spend all day working so they can survive, and the stories call them evil. Elves spend all day lazing around in their vacation homes, and if you complain, somehow you're the bad guy.