I disagree. I think if you grew up in an environment where people often refer to each other as 'nigga' then you're naturally going to continue to use the word. Sometimes my sister and I call each other 'nigga' because we're close and we say it jokingly or endearingly.
I don't think what you refer to your children as is a good measure of how good of a parent you are.
I don't understand how a word of dehumanizing and degrading nature became a term of endearment. If I called my gay friends faggot or my Italian friend whop I wouldn't have any friends left.
So the whole "nigga" thing is questionable but I thing child humiliation is a very bad thing. It damages the child psychologically, and it can cause very bad self esteem probkems. Kids are bullied enough and discipline should stay within the family.
I don't think what you refer to your children as is a good measure of how good of a parent you are.