I think humans can have a naturally and inherently selfish nature and I don't think this is necessarily a fault, I think it is largely based on instinct. It is good to help the greater good but I don't think we can expect anything in return for this instinct either. I am not sure if that is cynical and my view isn't set but that's how I view it now.
RE: Selfishness - Expectations - The Reach Of Your Arms (An Original Work.)