Like religion, the human mind. If there is no religion there is no human psychological dependence that cause conflicts with people with religion in mind. The religion is, therefore, necessary to live together as a society.
Religion is like the human heart and soul. If religion is defenseless mentally conflicts with a religious mind. The religion is essential to living together as a society.
Religion is the center of the human mind. If no religion, man is helpless mental conflict with religious people in mind. The religion is necessary for coexistence as a society.