Based on my experiences when I visited the USA, with sidewalks in most of the states I visited suddenly stopping for no apparent reason forcing me to re-trace my steps and take a different route, or with many road crossings feeling so dangerous that I was seriously tempted to take a taxi even for really small distances[0]? There's plenty of places where the city designers make this unnecessarily hard.
One of the reasons I chose Berlin over San Francisco when I was deciding how to show the ultimate lawful middle finger to UK politics, was that I like walking.
[0] it's only the 0.4 miles from the The Cupertino Hotel to 1 Infinite Loop, but ten lanes on the North De Anza Boulevard and 2/3 on the on/off ramps connecting it with the Junipero Serra Freeway is terrifying.