What is amazing about walking I have no idea. That sounds utterly horrible - to be in a place where everything is so close together that you can walk to everything?
Space, humans need space.
Ugh, I'm getting nauseated just thinking about it. And yes, I've been in places like that, I've tried them out, and they were as unpleasant as I expected.
I tested it, I went to NY using only public transportation, and it was the most horrible time I've ever had being away from home. Never again! Never!
My feet hurt, my back hurt, without a car I had nowhere to leave my stuff, so I had to carry everything with me, or make the long trek to my hotel (NY banned AirBNB, so hotels are far away from where I wanted to be).
It was truly an absolutely miserable experience, and sitting in traffic, or hunting for a parking space is a billion times better.
I've tried NY with a car before then, but I was told you don't need a car in NY - so I tried it! And they are wrong. Public transport is ALWAYS worse than a car, it's slower, much slower, it's less convenient because they only run during popular hours, it's more expensive than renting a car because you have to supplement with Uber.
I don't know why I keep trying this no-car stuff, but I did, I tried Washington DC with and without a car. (I went for 2 days, one without a car, the second day with.) A car is better. MUCH MUCH better, and cheaper too, even paying for parking.