That is demonstrably not true. All over the world, people raise families just fine without cars. As a matter of fact, I saw a truly dystopian scene of a group of children, on some school outing I assume, crossing a road at a crosswalk, all holding on to a long ribbon with two flag-waving adults (teachers?) on both end. When I was the age of these children I was walking around and crossing the streets on my own because the city I grew up didn't have such patently idiotic things as unregulated cross-walks with 30mph speed limit. But no, we'd rather risk running over children and make them walk in a chain gang, than inconvenience the metal murder/fume box people.