These low-density car-dependent suburbs provide a very poor experience for everybody outside a car, from children/teens who can't drive yet to people who are trying to get to a destination (work, shop, library, restaurant, etc.) without a car.
Is there? This is actually a problem. In many neighborhoods, especially in the nicest areas where people are richer, there are fewer and fewer kids. Today, there are significantly fewer kids than adults. Just a few decades ago, kids outnumbered adults in many neighborhoods.
I mean this really matters. If you have a community of 40 families and twenty kids, there's hardly any kids that can actually play with each other. They're probably too different in age, to have groups of more than 2 or 3, and that's a stretch because if you only have two or three there's a significant chance you may not get along / might not be super-interested.
Of course the kids need to go outside to meet those other kids (and the other kids need to go out as well), and parents need to let kids out of their sight to go to the park.