The perception of urban blight is, to the best of my understanding, a mostly separate cultural phenomenon. It doesn't have to be the case for every city in the US to be a shining pillar of civic excellence (many of them aren't!) for it to be the case that suburban living drives alienation that feeds into statistically irrational fears of strangers.
In other words: we're talking about two separate things. You're describing an abstract quality of life concern, which is a valid concern that a lot of people share about major cities. I'm talking about a cultural zeitgeist around treating strangers as predators or latent criminals, which is statistically unborn.
(We can also play the anecdote game: I've lived in NYC my entire life, and I've never dodged human excrement or needles. I've seen needles and human waste, but they're a vanishingly small component of my experiences living here.)
In other words: we're talking about two separate things. You're describing an abstract quality of life concern, which is a valid concern that a lot of people share about major cities. I'm talking about a cultural zeitgeist around treating strangers as predators or latent criminals, which is statistically unborn.
(We can also play the anecdote game: I've lived in NYC my entire life, and I've never dodged human excrement or needles. I've seen needles and human waste, but they're a vanishingly small component of my experiences living here.)