It's all about knowing yourself. Seriously, if it wasn't for financial considerations, we'd have 9. And we'd stop there only because DH thinks double digits is "ridiculous."

(Nope, he can't explain to me why one more kid would make all the difference.)
Of course, if I had to have a c-section each time, I'd seriously not want any more. I had a rough time this pregnancy at the beginning when I was contemplating a 3rd surgery. (Which isn't even the beginning of a knock against women who choose repeat c-sections, I just had bad experiences.)