Wealth provide people necessity for a better living and continueing development. For basic living, education, travel and more enjoyment. It makes people happy to a certain extent. However, enormous wealth does not mean lasting happiness. Once their desire of making more money becomes bigger and bigger, it will make them go crazy and blind. They even trade for money with dignity and morality, or they commit a crime.
Wealth is not the only thing that matters in the world. We shall "make money without doing evil".