R.D.
Looking at my 3rd (and last!!)... I DO have moments where I miss the baby days... but then he jumps off the couch/sits on the dog/throws a bowl of food, and I don't miss it anymore, not even a little :)
ETA... if I'm going through baby withdrawl, I remind myself that 2 of my girl friends just had babies, and it's about time my brother and SIL started trying! Those babies I get to love on... and give back :)