As urban populations in many countries around the world have, for the first time, surpassed rural populations, urban infrastructure and housing supply are under unprecedented pressure. However, some argue that this trend toward concentration is an inevitable cost of economic and cultural progress, while others insist that dispersing populations to rural areas is the only path to sustainable development. In your view, have the challenges brought by urbanization already outweighed its benefits? Please state your position and support it with specific reasons and examples.