"Most people feel on occasion that life is absurd…Yet the reasons usually offered in defense of this conviction are patently inadequate.”

A paper on the absurdity of life.  

“Nothing we do now will matter in a million years…anything that will be the case in a million years matters now…it does not matter now that in a million years nothing we do now will matter.”

Living out lives with some sort of seriousness and having an outside point of view which sees what we are doing as useless.

"We concern ourselves with several things on several degrees.  “Human life is full of effort, plans, calculation…we pursue our lives…”

“We step back to find that the whole system of justification and criticism, which controls our choices and supports our claims to rationality, rests on responses and habits that we never question…which we shall continue to adhere even after they are called into question.”

“Yet when we take this view and recognize what we do as arbitrary, it does not disengage us from life…the fact that we ourselves can take it, without ceasing to be the person who ultimate concerns are so cooly regarded.”

This is why our lives are absurd.