They're also the only practical method for people who can't do things remotely. Yes, ideally people could live anywhere and work remotely, even having things like food delivered rather than having to drive just for the capacity, and with a PRT system to get to places (think automated taxi-style vehicles that run on track rather than (or built into) a road, which can pick you up at your location and don't stop every 10 seconds for other people, but only share with people going to the same place as long as the detour is only short), but that requires restructuring. The world is going that way, and maybe in 10 years it will be practical on a larger scale, but as it is right now, unless you live somewhere like London or New York, there's no comparable way to get anywhere.
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