I agree, and I feel the same way when guys like Rock, Pryor, Chippel, and Byrd throw around the "N" word. Its not comedy, its not funny, and there is always a double standard.
I agree that racial epithet comedy is not funny, but I don't get my panties in a bunch about black comedians using loaded words, let them own them. It's a very understandable and reasonable double standard... Much like I can be critical of my own family but I'd loudly defend them if someone on the outside did. There are double standards in life that are perfectly OK.