My A-Z of Writing Tips: Writer - who me?

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I see this question a lot around the blogosphere: When can I call myself a writer?

I tend to look at this quite pragmatically:

• I write, therefore I am a writer
• I think I can write, therefore I am a writer
• I know I'm a writer, therefore I don't need anybody else to tell me I'm a writer

How about you: Do you have a different approach? Are you a writer? Are you waiting to pass a particular milestone, or meet a certain goal/point on a yardstick, before you call yourself a writer? Do you refer to yourself as an "Aspiring Writer" (which implies you're trying to be, but are not yet, a writer)?