The numbers are ugly.
My hub and I both had grandparents who were one of 10+ kids.
Their kids, our parents, had 3 each in the 70s/80s.
Of us six siblings, our parents got a grand total of TWO grandkids (my two). It’s so bad, on my hub’s side, my son is one of only three boys who can carry on the family name.
I often see this statement (in some form) and wonder why. Why is it important to you that the family name continue? Does it not occur to you that there are many "family" names and some of them are extremely common. So, unless your last name is unique, and by that I mean there is no other person with that last name, how can you say that you carried it forward?