Car-centric urban planning is hell with kids. You have to load them up into the car for any small trip. You can't walk or bike anywhere because cars make it so dangerous.
My only regret about living in the US is this car hellscape that is so hard to avoid. It's mandated by law, not chosen by the market.
Chicago has (recently?) put a lot of focus on their bike infrastructure (protected bike lanes, bike signals, bike only paths, etc) and it seems pretty widely used.
[0]: https://betterabound.familybikeride.org/img/winter-kit.jpg
I'm certainly not opposed. But my observation in the relatively nearby city when I go in and sit on the sidewalk at a restaurant is that the fairly new protected bike lanes have a fairly terrifying combination of transportation modes (bikes, ebikes, things that I guess are ebikes but look almost like small motorbikes, escooters, and pedestrians crossing). And then, because they're in a bike lane, many seem to assume the signal at the next street doesn't apply to them.
Not sure of the best answer.
When I was bike only I had my arm damaged in a way that it took close to a decade to get back to normal. On another occasion I was knocked unconscious. Both occasions were drivers who left turned into a parking lot without looking, crossing a lane then going right into me in the bike lane.
A car provides a nice cushion for those sorts of happening. I think if I had a child in either case there is a good chance they would be dead.
While I support the right of people to make their own risk assessments for their family, I fear it is only a matter of time until they come to understand what I did about Chicago biking.