Before this thread veers into KatDaddy territory...
For us, the jump from two to three wasn't that substantial at all. (Each kid was born roughly two years after the one that preceded it.) In fact, the third was kind of a peacemaker, as the first kid was always bothering the second kid, and now the first kid just focuses all of the attention on the baby.
Like Mrs. KK (a known wonderful human being), Mrs. WonderMeal started out wanting five. At first I said two max, but have obviously changed my tune. If I could have a ton of kids without having to drive a minivan (and if daycare was significantly cheaper), I'd probably go with five. We might max out at four, but aren't sure yet.
