MayaJ wrote:PP, what do you mean by "I do think the payoff to each additional kid diminishes, though"?
From my perspective, there are lots of pros to having a second child that don't exist with the third child. Having a second child lets you relive the early cute days that you may be missing or didn't realize to take full advantage of with your first child. It provides a built-in permanent playmate and best friend to your children. You can also economize by using lots of the same products assuming the kids are the same gender (e.g., hand me down bikes). I personally feel that the third child (although he's not here yet) doesn't confer the same benefits. There is already a built-in playmate, do you need two of those? It's no problem to keep some clothes or a bike for 2-3 years, but do you really want to keep it for 5-7 years? By the time this age difference comes along, carseats mostly can't legally be used anymore so you have to purchase new ones anyway. And, even reliving the younger cuter days, it's like... this is the THIRD time now. You're also older and I'm not sure losing sleep and changing 2am diapers will be as easy at 40 as it was at 30. Finally, with three kids you are getting to the point where fitting everyone in one sedan or SUV is possible, but it's getting tight, especially with 1-2 of the kids in large carseats. The scourge of the minivan is rearing its ugly head and looming over you (I pray this won't end up being needed).
Anyway, that's what I meant about diminishing payoffs.