virtue (and philanthropy) are their own reward

Per today’s WaPo. If this is true, why is the world so f**ked up?

…when the volunteers placed the interests of others before their own, the generosity activated a primitive part of the brain that usually lights up in response to food or sex. Altruism, the experiment suggested, was not a superior moral faculty that suppresses basic selfish urges but rather was basic to the brain, hard-wired and pleasurable.