Why is it necessary to have car if you have kids? It's quite possible to get around with kids, if the city is built for it.
So either we discuss the reality where the next available pediatrician is in the next city (1h with two busses, imagine this trip with a sick child on your hands).
Or we discuss the fantasy world of "everyone should be able to get everywhere they want to go easily". But then stop asking, what is it about children that you need a car.