this is our third baby and our last and honestly my feelings are mixed. My dh had a V two weeks ago so three is it, at least for pregnancies. He thought two was enough but never got around to the big V before and well, just didn't come to the game prepared IYKWIM, so last summer on vacation, we got pg again. I was pleased though while I'd hoped to have three years between these two, it ended up being 26 mos. When I look down at this precious little nursling, I fantasize about being younger and wealthier so I could consider four, but this is fantasy. I am a bleeder and had my worst hemorrhage yet with this delivery and my MW was about to give me a lecture about not having any more babies when we informed her that dh had an apt for his V. So, the practical must win out here; I am the primary breadwinner in our family but my dh's job has the benefits so neither of us would stay home so we have daycare that is going to be in excess of $1000/mo. Yea, sobering.
Besides, dh has been working a lot of nights and while I thought there was a huge difference between one kid and two, that had really settled down now that they are old enough to play together and communicate with each other. But having an infant plus two older kids (4 and 2 y.o.) is hard especially if you are alone with them - I notice this most at dinner time and bed time when my nursling is fussiest (he's an amazing baby overall). There is just not enough of me to go around and it is very, very difficult during those hours to be the kind of mom I want to be; I have to resort to things like 20-30 minutes of tivo'd shows for the older kids and the bed time routine is anything but these days. I know I push the limit between 'motivators' and outright bribes!

Long answer, I know and remarkably, my first post during this whole adventure, though I've been lurking since the this forum started! I haven't even updated my signature to show my new addition (5/19/06).
Good luck wtih your choices, mamas!