But once you have a family, that's just not factored into the price. If at about a family of 4 (mine's 5), public transport becomes more expensive than driving a car and renting parking even to go into the city center. Frankly, in the suburbs a car is cheaper even for 1 person. There are some other usable ways to get around (electric scooters, the kind you sit down on) are becoming popular for a good reason.

So I wonder about this increased efficiency. Most modes of transportation, as well as rental prices, are priced per-person. A car helps enormously, especially as the number of people increases. Plus cheaper groceries, cheaper access to everything from furniture to woods, ...

If there's any truth to capitalism, efficiency, when it comes down to it, is price. So for families, even small ones, I think we're dismissing the idea that suburbs are the most efficient possible too quickly.