“As the suburban development pattern gobbles up more land, it channels people who want to experience nature into fewer and fewer places. The last remaining wildernesses are ‘flooded’ with people. This has led to stricter national park management, including reservation requirements. One of the best ways we can protect our most iconic wild places is by protecting the wild places closer to home from the land-hungry Suburban Experiment. People who love wild places should be Strong Towns advocates too.” — from latest edition of Strong Towns email newsletter
And I would add: Suburban sprawl development is extremely difficult to fight, because of the various economic distortions that subsidize such development.
As inhabitants of the wealthy industrialized nations, our next (last?) frontier is to rewild already-developed areas, including our own urban/suburban home sites, rural sites longtime industrial-ag use, and so on.