I thought my 3rd would be my last and I was very, very torn about it. I hated pregnancy and that was the reason I didn't want to have a 4th! I almost had my tubes tied but changed my mind a few weeks before DS3 was born. I am so glad I didn't follow through with that! It was DH who suggested maybe we were not done yet and even though I thought he was crazy, I was a little relieved as well.
Now pregnant with #4 & knowing this really is the last time I will be pregnant/have a newborn/etc I am surprised that I don't feel sad at all, but excited to do this one more time!
I'd love to hear how you other mamas having your final additions are doing emotionally!