Do you call yourself a writer?

I suppose in the simplest since, yes, I would call myself a writer. Meaning that I do indeed write often (either because I have to for academic reasons or because I choose too). But I would never tell or profess to others that I am a "writer." To me, when I think of someone being a writer I think of individuals who write novels, plays, poems, journals,etc. with the intent of having their work published for a mass audience to read.
I guess I tend to only claim to be what I think I know I am really good at. I do not like to overestimate my abilities (and often times I'd say I actually underestimate myself) because that can only lead to embarrassment, and who really enjoys being embarrassed? Writing, to me, is a very personal thing, and should I say to others "yes, I am a writer" then they would most likely assume that I am very talented at writing...but if I let them read something I wrote and they highly disapporved, I would then be inclined to think less of my abilities. I am all for corrective criticism but it feels less like a personal attack if to others I am not perceived as a true "writer."
I also don't think I have the credentials to be called a "writer," at least not by other peoples' standards. I don't have an English degree or anything like that (and I am not pursuing one), I have never written for a newspaper or anything either, so I do not think that others would agree if I called myself a writer.
Obviously (and sadly) I am putting a lot of emphasis on what other people would think of me if I were to call myself a writer. Being one who cares about what other people think isn't something I am fond of but the world is full of judgemental eyes and claiming to be something that I may not be, puts me at the center of all those judgemental stares.