Well, they probably never bother to reflect on their own actions, nor the backdrop dumpster-fire we call society. That, with the rapidly approaching line-of-no-return heating of ocean water is enough to realize Humanity is a pox upon the Earth, and yet somehow we are supposed to reconcile these feelings and our very existence and desire for personal fulfillment in the face of overwhelming evidence that we are mostly powerless in the grand scheme of things.

So yeah, stupid people and narcissists are generally happier.