Everything has two sides.The poor and the rich also have the happiness and the sadness.
For the poor,they don't have money,they live in a life which have to worry about the food.But they live in a happy life on the other hand.Why?They don't have to worry about whether the money will be stolen anyway.
For the rich,they have enough money,they live in a life which have anything they need.But their life are not that happy though.They have to worry about the money.And the family fighting with money.
So from all above,we learn that live in a happy and average life is the best.