If housing is blindly large, the social cost will be very high.
First, large housing, low population density, expanding cities, and many people are squeezed into the suburbs. Second, the infinite expansion of the city, the distance between home and unit is getting farther and farther, resulting in traffic congestion, too much land used to build roads, raising land prices, and further causing housing prices to soar. Time is consumed a lot on the road, the quality of life declines, and the lack of attention to children's education affects the quality of the next generation. Third, the traffic pressure is high, and the energy consumption is also large.
Japan's small house society has many advantages. The population is dense, the public life is abundant, and the public transportation is developed. There are many pedestrian streets, citizens are accustomed to walking, and there are more opportunities for exercise. As a result, people are healthier and live longer.