> In most places in America walking is not a practical mode of transportation because of distance; it’s miles from your house to the grocery store, for instance.
Which is because we’ve specifically built everything such that there are large distances involved which necessitate cars. You’re taking this as that natural order of things instead of a deliberate decision, which it was. We could have just built towns and cities with the right level of density instead. Even where there aren’t “large distances” involved such as the suburbs where the grocery store and doctor’s office have to be built a half mile or so away everyone has to drive because surprise surprise we’re stupid and made it so that you’re crippled and have to drive to go any distance, not just actual long distances.
> Separately, it would be nice if we had more sidewalks, but they are financially unsustainable in low density areas.
All the roads and highways are unsustainable too, more so, in fact. The difference is the government subsidized these instead of subsidizing sidewalks or more density to create the illusion of progress. Can’t be stagnating as a society if there’s a new road!