As a kid, I played with dolls, all kinds of dolls: Barbies, Cabbage Patch Kids, Pumpkin Patch Babies, non-name-brand dolls, you name it. Each day of play involved some sort of narrative in which the dolls were the protagonists and antagonists of some elaborate plot. I often wish I had a transcript of these narratives so I could plagiarize myself.
I also read a lot as a kid. One or both of my parents read stories to me every day. I also listened to books on tape and books on record. I even looked at picture books and "read" the pictures.
I like to think it was this combination of doll-play narratives and a large volume of books that aided my love for writing and storytelling.
I thought about this after reading Karen Bender's article in the New York Times called "The Accidental Writer" in which she claims "I became a writer when I was hit on the head with a rock."