I usually don’t either. Well, I don’t start anyways. Our kids usually cause others to strike a conversation with us first! I know it! Each of our grandparents had 6 kids, except my mom’s parents. They had 5.
In my opinion, I think another big part was the mom leaving home to work. You know how hard it would be to raise a lot of kids and work full time. More mom’s are staying home these days. Good for them!