I had exactly opposite feeling when, at 30, I visited Manhattan. The downtown (from the street level) was just depressing, all these skyscraper walls around you. Then subway (which looks like a cellar, I couldn't find the station entrance despite looking at it) to 103rd street where I had hostel, not much better feeling with dense high-rise appartments. I had to take a quick walk into central park to recuperate, although it was not recommended to stay after dark there.

I wouldn't want to live there. And mind you, I was born in the center of Prague's Jizni mesto, which is a district designed in the 70s by communist government (to solve a housing crisis), build with cookie-cutter, 8-12 store, grey and boxy appartment buildings. Certainly not ideal urbanistically, very little commercial zoning, but still quite a bit of greenery (and from the 6th floor, we can actually view about 30 km to the countryside). In fact, some claim there was more space dedicated to greenery when it was built than in modern capitalist "luxury residential" developments.