Ancient people were possible to survive if they were possible to provide foods for self-sufficiency in old times. They were necessary to have talked about how to get foods.
Now, money is necessary to obtain food. Money is necessary only even for living in the society. Therefore, I think that it is natural to tell about money. What is why we do not do it? I think that it is because there are a lot of people who think that money is almighty. As if the amount of money decided the person's limit. By that token there are a lot of people who lose control of oneself when there is a large sum of money. Obtained money is exhausted immediately. I feel the limit in the possibility of money very much.