Then there is the BIG, however ... when there is a disaster, be it an earthquake or a pandemic, there are other ramifications from density. Density then amplifies the impacts of the disaster because there are more people and infrastructure compacted in a disaster zone.
Thus we have New York City taking it on the nose with the coronavirus hitting them hard right now. Other smaller, large and mid-sized metropolitan areas will follow. As an example, the city of Detroit already has 500 police officers testing positive for the virus.
I'm waiting to see when and how rural areas are impacted by COVID-19. They have fewer people, but even proportionately fewer resources.