As global urbanization accelerates at an unprecedented pace, many major cities are grappling with housing shortages, traffic congestion, and strained public resources. However, some argue that urban expansion serves as a core driver of economic growth and innovation, and that population concentration can actually enhance efficiency and improve quality of life. Given the constraints of limited resource allocation, does the continued expansion of cities yield more benefits than drawbacks? Please articulate your stance, providing reasons and concrete examples to support your position.