Honestly I don't think that I'll ever be done either. I love being a mommy and having a baby too much and unfortunately they don't stay babies for very long. I still find it hard to believe that in just 3 short months I'll have a toddler. Unfortunately though I'm barely able to get DF to be okay with 3 kids, but I'd love between 4 and 6. Maybe after our 3rd I can convince him to have just one more. It's doubtful, but I still have hope. I still have 2 more to go though, so maybe I'll feel ready to be done after our 3rd.
I try to talk to DF about our next baby, but he always asks me not to bring it up right now. I think it's because our financial situation isn't where he wants it to be for more babies. ):