Interesting perspective on this, of course no one should be exposed or expected to engage in any language that makes them feel uncomfortable or offended. I for one do not use this language because of my own vibrational attachment to it. However it does not directly insult me.

I do have many friends that do use it casually and I have asked them about it, as I am often referred to as "my nigga" too. I am not offended by it although I do not reciprocate it. Once I was explained by my friends mom that the way my friend grew up, his community would use the word as a reference to each other as a way to reclaim their own indentity.

My innerstanding is that "nigger" being the derogatory term used mostly by white people to address their slaves had such negative history that this new generation use "nigga" to empower themselves and turn it into something they do feel comfortable using. Thus negating the insult from racists.

Anyway, that's from the words of my friends who are indeed considered "black", african, african-american, west indian, british born. Personally I suspect a more sinister social programming deployed by media to usurp the interracial attitudes of our youth.. however I'm obviously a conspiracy theorist and like to over think things lol..