What is the perfect size family? Two kids? Three? If you go up a few generations, you’ll learn it was once common to have seven, eight or more children. Blame it on more accessibility to better types of birth control, but the site of such a large family is just not as common anymore. Ever since Nadya Suleman gave birth to octuplets with six young children at home, the question of when do you stop has been the topic of debate.