am i a writer?

I have manyy roles in life: i'm a sister, a daughter, a girlfriend and a student. I do not consider one of my roles to be a writer. I would not define myself as a writer although I enjoy writing. I get somewhat excited when I'm assigned a paper in a class because I feel that writing comes easy to me and it's the best way for me to express me thoughts and abilities. Thus, if I had the choice between a multiple choice exam or an essay exam, I'd pick the essay every time. However, I don't think that makes me a writer. I don't own a journal or a diary and probably never will. I've never written a book and don't really have an interest in doing so. And I can't say I haven't had any of my writing published because I have but that still doesn't make me a writer. When I think of someone being defined as a writer it sort of makes me think of facebookers. Facebookers are normal people who go about their day but when anything exciting, traumatic, thought-provoking or dramatic happens to them, they automatically think of the perfect facebook status to share whenever they get to the nearest computer. I think writers are in many ways similar to this. In their spare time they write. It doesn't have to be for a class or because someone told them to do it, they write because they want to. It can be about random thoughts, new ideas or a fiction story they make up off the top of their head. No matter what they are writing, they do it because they want to share it. They may never show anyone their pieces of writing but they want to share they creative abilities with the paper and pen they use. There doesn't have to be a particular point to writing when writers do it therefore I don't consider myself a writer.