Money is a medium of exchange and is thus justified and even considered necessary. But it hasn't remained just a medium of exchange. Money has become a self-reproducing entity through instruments like profit and interest. In olden days, usury was looked down upon. Somebody who wants to make more money from existing money was considered greedy which was not a desirable trait. Today, no one seems to question it. Greed seems to be a given. Today, the popular image of a human being seems to be a greedy pig. What happens to the larger morality of people when greed is considered a part of life, essential, legitimate and justified? All our economics seems to work with these assumptions.