Human: a primate that builds a model of its universe inside its brain and upon physical maturity, moves a model of its Self inside that model, avoiding Reality at all costs.

Evil: an action taken based on an unquestioned belief.

I've tried to address the "work received" aspect in a couple of stories. The quantification of proportion between the work we need and the energy we are wasting is such a great gap that no matter how we try to explain it, the modern human brain is not equipped to accept the level of uselessness of almost everything we call "The Economy".