Human beings are emotional animals. Emotions are a distinctive feature that distinguishes humans from animals. Emotions are expressed in two ways: thinking and behavior. Human social practice activities are also completed through social cooperation, and collaborative activities are completed through emotional exchanges. Therefore, there are several reasons for making friends: 1. It is the survival needs of human beings themselves. There is a psychologist in the United States named Maslow. He has a famous hierarchy of needs theory to answer your questions: He believes that human needs develop from low to high at a certain level, and when a certain high level needs desire After being realized, the previous low-level needs will not exit, showing that they coexist with the high-level needs and continue to advance towards higher-level needs. There are five levels of human needs hierarchy, including physiological needs (eating, sex); safety needs; emotional needs; needs to be respected; and value recognition needs. The first three categories are low-level needs, and the last two categories are high-level needs. It can be seen that just like people must eat and sleep, making friends is an important way to satisfy human emotional needs. 2. Making friends is an important way to achieve social gathering and collaboration. Social practical activities are collective collaborative activities of clusters. Making friends can bring together some people to achieve a certain purposeful social activity. 3. Making friends can maintain the way human society exists. The survival and development of human society mainly exists in the form of groups. For example, the family is the most basic mainstream unit of society. To maintain the continued stability of this unit, in addition to blood relations, it also needs to be supplemented and enriched by harmonious emotional exchanges. Externally, Friendship activities can feed back the stability of this basic unit. In other words, any social organization not only needs the support of social systems, organizational institutions, etc., but also needs the support and care of friends of the organization members. Therefore, if human beings no longer make friends, the order of human existence and society will cease to exist.