We are living in a material world, and it's really difficult to deny the function of money or wealth. We need money for food, clothes, education, hospital, housing and transportation, etc. There's rarely anything that doesn't need money. What we can discuss now is not the importance of money, but whether money is almighty and whether more wealth can bring us more happiness.
We must say that money is not almighty, and there are many things which money can't do. For example, many emperors like Qin Shihuang longed for elixirs. As wealthy as they were, and as mighty as they were to take every measure to search for long life medicine, they still could not avoid the sad denouement that “their graves are a covered with weeds”.