Recently, 'single-household' is increasing quickly, nowadays. According to National Statistical Office, 40% of countries in Northern Europe, 35% of Americans and 45% of people in Japan are single households. Our country will be like is close to 30% of the entire population. The reason for this is because of the weakening of family value, ever-worsening individualism and increase in the number of the unmarried. Among these reasons, the deepening individualism is main reason. Among OECD member states, people in our country is getting older at the fastest pace. Ironically, among countries around the world, our country ranks the highest in terms of economic growth. Unluckily, also in terms of population extinction, it rank the highest. In conclusion, there is doubt over whether the hither to national policies are right or not.