http://www.sciencedaily.com/releases/2009/12/091208155309.htm
“Survival of the kindest” as it has been dubbed by researchers referring to the evidence that human empathy and compassion have been naturally selected for in nature since these traits are the most beneficial to the survival of each person and of society as a whole.

This theory of “Survival of the kindest” was evolved to allow humans to effectively form small tribes. You can see how it breaks down under current conditions. Go to a small town and observe how people interact. Now go to progressively bigger cities and observe. Notice a trend?
It’s ultimately selfish anyways. You give now in the hopes that your benefactor will repay the debt later. This is just delayed gratification greed. Humans are animals, sophisticated animals, but animals none the less.
LaoTze
In the emptiness of a cup lies it’s usefulness.
Empty your cup.