Money. It is the economic water in which we live our lives. We even call it ‘currency'; it flows around us, carries us in its wake. Drowns those who are not careful.
We use it every day in nearly every transaction we conduct. We spend our lives working for it, worrying about it, saving it, spending it, pinching it. It defines our social status. It compromises our morals. People are willing to fight, die and kill for it.