Earlier quoted context omitted.
You don't need "low rise cohousing communities" to have families in cities. Japanese cities are extremely dense, yet people raise families there just fine. On my trip to Japan, I was really struck by how many children I saw in the middles of cities (moreso in some districts than others, of course), whereas I never see children in downtown American cities. Of course, Japanese cities don't have enormous parking lots, e…
Because they have a high trust, homogenous culture. How many people feel comfortable taking children on public transportation or allowing to roam the middle of cities? Culture matters, and quite frankly Japanese culture is different.
There are various historical factors that have resulted in that abysmal situation in the US. Assigning it all to a four-word summary of Japanese culture is a bit reductive. The dangers in the city are different than they in the 80's, and they'll change again. The important part is to believe we can do better.