I'm having my fourth boy. There is a 10 yr age gap between #2 so I think that has helped a bit. Either way, I wanted a sibling close in age to son #3. I feel the same way about a 5th child, I would only be doing it for a girl, and not because I genuinely want another child. We are going with an IUD after I have this one and I guess we'll see what the future holds.