Earlier quoted context omitted.
Millions of New Yorkers (and billions worldwide) have kids, no car, and get along just fine. Subway trains are quite capable of carrying virtually anything you can carry. And bicycle trailers are pretty impressive specimens. And when you need to haul anything truly massive, sure, rent a Uhaul. But to pretend you need a 2-ton vehicle because you've got a couple little kids and a load of groceries for the week... c'mon…
There is no way you can fit a week's groceries for a family of four in a bicycle trailer.
Most people fit their week's worth of groceries in a grocery cart, and manage to push that around the store. I really don't understand why it's crazy to think you could tow them home with a bicycle. Plenty of people do this. It's a bit out of the norm in the U.S., yes. But don't for a second think it's impossible, or even particularly challenging.