Okay, to be honest, I don't really remember anything specific that made me want to write. Sorry.
What I can remember is looking for any excuse to have to write something. And I remember going to the Young Writer's workshops as a kid, a program where teachers pick which of their students get to miss a day of school to go learn about writing. I was able to go three times. It was a wonderful experience. I got to meet Stanley Kiesel, the author of The War Between the Pitiful Teachers and the Splendid Kids. (I sill have my signed copy.)
But I don't think I ever really thought about writing a book and getting it published myself. Not until much much later.
Reading picture books (lots and lots of picture books) every day with my kids made me want to write one, but I can't draw or paint to save my life. So I got this idea that I'd make a picture book with photographs. I did, and it totally sucked, by the way. Don't worry, I never sent it out.
What I learned was that you don't need to be able to draw or paint, or know someone who can. (Um, duh, right? Man, I really knew nothing.) I've been writing ever since, and trying to learn as much as possible.
So, that's my story. I can't wait to read everyone's, here's the link. :)