i have a family. living with a small child in an american city without a car is entirely possible. you lose the ability to go out (either to city or to nature) but with a small child you don't have time to do that anyway so you might as well pay more to live closer to your job. alternative is paying the difference in rent for a car loan and loosing the time you don't have while sitting in traffic. big caveat: this works only if you earn enough to be able to afford living close to a city center in the first place. also, it is still way less comfortable than a life in a developed european city.