Take a handful of change, and smell it. That ionized, metallic scent, like blood. Now take a few bills, and smell them. A bitter and putrid stench. Like rotting flesh. Now imagine if you were so purposely inbred as to be able to detect (and cause) these scents, and achieve an endorphin overload each time you did? Now you know why they have such massive noses and low intelligence. All of the things that make a human a miraculous being capable of creativity, engineering, love, compassion, and bravery, stripped out for some sort of unholy olfactory greed organ.