Are you white?
I think it's a mistake to assume that everyone's intention (or that there is, in fact, a single intention) behind the reclamation of a word like nigger is to make it possible for *everyone* to feel comfortable using the word. I think it might have something to do with enabling black people to control discourse.
I know loads of people - outside the "meedja ghetto" - who refer to each other as "niggaz". Sometimes they refer to me as a "nigga", which I have had varying reactions to...being white...but it's always been a term of affinity/recognition when I've received it and I've appreciated it as such.
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I had an interesting chat once with a colleague over burritos (there was a whole weird subplot of him trying to get me into bed, which, I think, permeated all our interactions with a strange power-vying dynamic...interesting in this context, but anyway...). I was quoting a friend of mine who used the word "nigga" - I can't even remember the context - and the colleague with whom I was chatting got extremely uneasy about the two of us speaking in this taqueria: me, a young white woman, him, a middle-aged black man, surrounded by various people - not really friends - whom he'd known years ago when he was on the streets. My colleague told me he was uncomfortable with my using the word, not because he thought I used it with injurious intent, but because it made him uneasy, particularly with all those people around...and I don't know that it would have made him similarly uneasy had I been, say, a black man.
I apologized, clarified, etc; but, unfortunately, my colleague chose later to defend his atrocious anti-Semitic comment and ridiculous behavior all-around (after I told him I was not interested in him sexually) by citing that conversation in the taqueria as justification for his obnoxious behavior.
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Well, after that derail of all derails, back to our regularly scheduled programming...