I'm afraid to puncture the balloon of most the ageing white men on the thread, but the (mostly black) musicians who do RnB have more right to the term and what it means than you. Music evolves and changes. Is there anyone here who thinks Ornette Coleman isn't jazz because it isn't trad New Orleans style, or that large orchestras are just wrong?
And there's a thin line between knowing what you like and simple prejudice. I'm not sure how far some of you are over that line, but some of the generic comments about rap and RnB certainly smell a bit funny.
There are, as the great Count Basie once said, two kinds of music: good music and bad music.
Why do people even start threads like this?