One reason that people desire to have more money is that everything is getting so expensive that a single salary is not enough therefore most of the people accumulate and use it for making more money but money is the need of life which every person has to earn.
Because of money we have even forgotten our value to our existence, because the way it is we just come to earth we go to school, look for a job then get married then get kids then death, some times we need to know the main purpose of our existence not just liven a life as if all is normal. We should make our selfes happy and more to life than just money.
You see life for others as a process that has a repeated cycle. Truly i agree with you that life is more than just getting married giving birth and then old and die. Every individual has something i called a purpose and if it is not fulfilled one should not be comfortably happy.