How many children is too many?.. REALLY?!

So the Duggar family has 19 kids-- 19 freaking offspring!! Was that not a point in time when either of these parents thought that after so many years problems may occur if they continue popping out the little ones? I knew for a while they had a show, not sure if its still on TV though... but really 19 kids?! I really think someone needs to step in and stop them because 19 kids [with prob 16 or 17 still at home] is just not healthy.... But I do hope that baby #19 gets better, she's a pre-mi like I was and being born 3 months early is no easy task!

* How do they remember all their children's names?! =/