Unfair Universe

We live in an unfair universe.  Like all primates, humans have strong negative reactions to perceived unfairness; thus we find this fact stressful.  There are two popular methods of dealing with the resulting cognitive dissonance.  First, one may change one's view of the facts - deny that the unfair events took place, or edit the history to make it appear fair.  Second, one may change one's morality - deny that the events are unfair.

from this post