If anything, photography begins with having children. I didn't take it up until my boys (twins) were about seven. I'm sorry I waited so long. I envy you being a seasoned photographer and having a new child.
Funny, when I read this thread, I thought it would be about photography after the kids leave home. That's been on my mind a lot lately. Mine will start college next year. No more willing (even if begrudginly) subjects at a moment's notice. There's always my wife, I suppose.