I have a friend who wants 4 kids, but her partner wants only 2... that's a pretty big difference.
If I were in that position, would I consider having more kids? Gosh, I don't know. I guess it would depend on how much I loved my wife. (Just kidding, honey!) I guess I would defer the question until the kids have gotten a lot easier and I'm in a better place to consider it...
If your SO wanted more kids than you, would you consider it?