I am an only child, and like many only children, I spent most of my time with adults. Of course I had friends, and a swarm of cousins on my father's side that I spent select holidays with, but for the most part I was surrounded by a much older crowd.
I don't remember holding a baby until I was 16, and I never babysat. My mother was convinced that I would never have a child, and for most of my young adult life, it wasn't something I even thought about.