As long as there is hope, in our world, all economies revolve around human social development. Newborns represent new life and hope, while old people are nearing old age, lacking innovation. You will find that many scientists achieve success during their prime years; when they grow old, their innovation and creativity diminish. The same applies to countries: the countries with more newborns and younger populations are more vibrant and have greater potential. For most people, this wealth is just a piece of paper, and if not invested, it will be diluted by currency over-issuance. It also requires social peace and stability to protect your assets. Hoarding cash is an uncertain form of wealth. In the future, population investment will be the smartest choice because people can earn money; people are assets. The more family members you have, the more social resources you will occupy in the future, greatly enhancing your risk resistance, and it’s easier to identify potential stocks. Moreover, blood relatives, regardless of the era, whether in peace or war, are your bottom-line guarantee, and there is no reason not to protect you as much as possible. That is blood kinship. Of course, there are always exceptions, which are few. So, earn more money, invest in population if conditions allow, and even one person can do it—this is from an economic perspective.