I would never presume to tell you how many kids a family should have. I will tell you that in my family's experience the 3rd child really changed my world. One is great, two parents learning to take care of kid shared responsibility no problem. Two is good, parents have learned how to take care of kids, one for each of them, shared responsibility no problem. Three all hell breaks loose, two parents no one to take care of third child, no one wants responsibility big problems. Seriously though it was kind of like that it's no big deal as long as parents out number or are equal to number of kids. Once you're out numbered you're in trouble and the third one is a spoiled whiner, cute girl but a whiner none the less. She's now 14 in 8th grade and 6'3", I've still got her in height slightly but her hands, reach and feet are bigger/longer than mine, she can touch the rim and I can't anymore.