I have always liked the idea of a big family but then it looks too much like hard work. Also if you really want a lot of children you need to start early an have good few years between each, my aunty has four and at one point they were all below school age. The only reason people had big families in the old days was not only a lack of contraception but because a majority of women would be having their first child by the age 14 so had over 30 years of child-bearing ability and even though infant mortality was much higher the mother was usually expecting the next already. We have control now, we don't need to have so many children.