[vitus]

You have a very narrow definition of a suburb.

Indeed, some suburbs have a lot of nature. I've encountered suburbs where individual houses are in the middle of the woods, off the main road, and yet not 10 miles away are developments where all the houses all look identical because they were built by the same developer and have a lawn in front, a backyard, and no wilderness whatsoever; right outside that development are busy streets on all sides.

I've lived in suburbs that are incorporated cities with population above a hundred thousand, and are eminently as pedestrian-friendly as some larger cities, but are tiny in comparison to the city that they're suburbs of (with more than a million people within that city's limits). And there are suburbs where you cannot get to the nearest grocery store without getting in a car and driving on the highway for 5 minutes.

You can't paint all suburbs as having lots of nature and being devoid of cars, just as you can't say all cities are identical.