Modern economics is not necessarily focused on greed and selfishness. As the article mentions, the field of behavioral economics includes motivations such as fa

Modern economics is not necessarily focused on greed and selfishness. As the article mentions, the field of behavioral economics includes motivations such as fairness and altruism. And behavioral economics is increasingly popular. It is entirely possible to choose to studying economics precisely because it is an attempt to quantitatively assess human behavior and motivations, even those that aren't greed and selfishness.