There's nothing fundamentally wrong with people. Given a story to enact that puts them in accord with the world, they will live in accord with the world. But given a story to enact that puts them at odds with the world, as yours does, they will live at odds with the world. Given a story to enact in which they are the lords of the world, they will ACT like lords of the world. And, given a story to enact in which the world is a foe to be conquered, they will conquer it like a foe, and one day, inevitably, their foe will lie bleeding to death at their feet, as the world is now.
[Y]our agricultural revolution is not an event like the Trojan War, isolated in the distant past and without relevance to your lives today. The work begun by those neolithic farmers in the Near East has been carried forward from one generation to the next without a single break, right into the present moment. It's the foundation of your vast civilization today in exactly the same way that it was the foundation of the very first farming village.