In many developed cities, the proportion of elderly residents continues to rise, while younger workers increasingly migrate to suburbs or rural areas. Some argue that this demographic shift will overburden urban public services and weaken economic vitality; others maintain that a growing elderly population can instead spur the "silver economy" and enhance community cohesion. In your view, what strategy should cities prioritize—investing more in elderly care facilities, or implementing policies to attract young people back? Please elaborate on your position, providing specific reasons and examples to support it.