Basically, human life achievements are not more that those of a cockroach. You are born, raised in a family, grows up to raise you own, and hope to die of ripe old age, in comfort, sorounded by your dotting grand-kids. Now, that is done by every living creature, and in fact, human beings are the worst failures in this, very basic activity. What advantage does human intelligence give him over cockroaches, is they can do this and he cannot? Look at multitude of single parents, broken homes, etc. For what reason, is man intelligent?