Kids, Cats and Dogs

In cities of affluent urbanity, why are kids so rare in the vicinity? In backseats of their glitzy cars, no tots there licking choco bars. Instead they have beribboned cats or manicured dogs wearing hats going to sauna-spas for pets, some to clinics of doting vets, others to lawyers for insurance or pet's fabulous inheritance. You may call me an old-fashioned hillbilly, but without kids, you just don't have family !