Why should the earth and the poor develop space Zhihu?

Some people answer this question like this: Because some people can't eat, they should put all the money from space research and development into social welfare to ensure people's eating. Although it makes people happier now, this happiness comes at the expense of future generations. Ordinary people can only care about the daily necessities around them, but the decision-makers of the major powers in the world see information and reality that ordinary people can't see: the development of human society is not satisfied by a planet, and the consumption capacity of civilization for materials is terrible. One day, human beings will leave the surface of the earth to live with their own aerospace technology, and the competition will be far more intense then. Therefore, they all have a tacit understanding: whoever occupies the commanding heights of aerospace technology will be able to take the initiative in competition in the future! So exploring space is preparing for the future of mankind. For the sake of future China people, they will not point at our spine and scold, "These pigs who only know their own pleasures! Their incompetence led us to lag behind the western powers again today and endure their bullying from the sky! " In order for the Chinese nation to still stand on the top of mankind in the space age, and for the Opium War and colonization not to be imposed on the people of China in the form of new technologies, we must develop space science and technology and explore the universe.