This is all related to how Americans designed their cities, and now are surprised by the consequences. European cities are LIVING cities, and that includes downtown. There are regular people living in the middle of Berlin, Paris, Rome, etc. Actually the city closest to the US example is Brussels, nobody wants to live in the center over there.
To counter your neighbour example this is what I get living in the middle of Paris (sure, fancy district but that goes for everything) - I went to the dentist a few years ago with my daughter, wanted to clip the stroller somewhere. Dentist went: "Sir, this is Paris 8, nobody is going to touch the stroller here".