It is just a word. I could stand outside and scream it at the top of my lungs and no one will be harmed from it. The only reason the word is "bad" is because the person who thinks it is is giving that word too much power.
In reality the problem isnt the word but the weight you give to such a word. If you can comprehend this problem then that word loses any negative effect.
It's a pity it's such a historically bad word as it's quite fun to say, rolls off the tounge quite nicely.
I realise where they're going and that WWE will push Roman Reigns straight to the top. However for me, Dean Ambrose is by far the most talented in that group and I think eventually if they just give him the spotlight then he's going to shine. As soon as he touches a mic everyone else can just sit down as he's magic on it. So It remains to be seen, I think they're all talented but to me Dean was the star of that group. I think Roman looks like the star of that group but I don't think he's nearly as talented as Dean.
My only problem with the word is when it's used to intentionally insult people of black skin color. The "nigga" variation is just street language referring to others by this word as in 'friend' or 'person'. The "er" (original) version, however, is pretty offensive and only ever used when it's a racist topic.
I think, however, using it more freely for non-racist meanings will be pretty good for the sake of less racism. It loses it's original meaning and it's not a bad thing.
I personally listen to tons of rap music as it's part of my life and the "N word" appears on a regular basis, probably more so than any other word. When I rap along, I sometimes find a better substitute that fits in the same context, it also often sounds simply better.