Yes it's not average but most of our friends have 6 or more children(including 4 families within 3 miles that have 8 or 9). It's worth doing if only to drive libs crazy cause they can't recruit fast enough to keep up. Also, I'm not saying that it's easy.
Obviously, it is not easy. I am the product of a large family. My grandmother was one of nearly a dozen children. They made it because her parents had a good-sized home and many of their kids stayed at home and contributed to the household until they married and left home.