where do humans get their rules on how to manage billions of people? the rules come out of our brains in the form of messages from god. You have to admit religions help manufacture billions of humans. Faith is good for humans because what do we all want? we want to survive and religions offer good solid rules on how to survive while we are alive and "BONUS" we also get to survive after we die. now what could be better for our simple little brains than the total package of survial. when humanity becomes self aware - we will all see this and move on to whatever is next.