If mankind started out without any negative traits that like greed, ego, anger etc., how would it shape our civilization up to this date? Would we have created the perfect utopia or made ourselves extinct long ago? Are our flaws holding us down or are they the reason our society made it to this point?
Without flaws, we would all have achieved nirvana, and would be freed from the cycle of birth and rebirth. There would be no people and no society, because we would no longer be chained to the flawed and impermanent material world. Simple as.