This. Also, large families are NOT more likely to have large families. My husband is one of two and each has eight children. I'm one of ten. I have eight, but everyone else has 0-3 (3, 2, 3, 3, 1, 0, 1, 1, 0 = 14 + my 8 = 22 = average 2.2).
Our family has the least amount of waste/use of resources (other than electricity and water)...we even walk everywhere. One of the siblings with one child has the greatest...two cars, lives in an expensive suburban house, travels regularly for vacations, etc (things the rest of us don't do), must likely eat out more, buys newer and nicer things, not used, etc.