First of all, necessary things of human life consist of food , cloths, accommodations and medicine. All of human beings alive because of these thing, if you lack something you must die or live without happiness.In terms of food,human eats to live, it's true. But on the other hand, many men live to eat.They spend a lot of money to buy delicious food because it makes them happy.In clothes side, nobody would be happy if not wearing clothes.Clothing is essential to the life for example We wear clothes to protect our body from the outside temperature ,We wear clothes to conceal the body and we wear clothes to beautiful fashion.So we found some people the money to buy many clothes. Because it makes them happy.In the field of medicine and housing as well. All men need to spend money to buy it.