why don't i write?

Once upon a time I was a wee little first grader. Throughout the school year we regularly wrote little stories, stapled little books together, and the room moms would laminate decorated book covers for us to "publish" our stories. I LOVED that experience. As if that wasn't enough of an inspirational thrill, we also had tons of authors come to our class to talk to us about their books and about writing. I decided that year that what I wanted to be when I grew up was a writer. Ever since, I have thought of myself as a writer, even if I'm closeted. And I love writing. Its a fabulous therapeutic and often enlightening experience. I totally process life verbally, so things just make more sense to me if I write it out. When I can't write it out - because I don't have the time, the guts, or the free hands, I write little mini-essays or journal entries in my head. Somehow, this has become my method of "writing" 95% of the time. So if writing is so core to my self-concept for decades now, why don't I write?