Diki, we differ on one point. It's my experience that the jackasses of the world can't play. The best players/singers I've known, and I'm talking about people in the class of Ella, Ray Brown, Steve Warner, Chet Atkins (only met him briefly-a gentleman)and others are secure enough in their abilities not to resort to smart ass remarks, put-downs, etc.
People of substance I've known have a respect for humanity, and, while they might laugh inside at the antics of the egomaniacs, their ability is reflected in their attitude about everything.
Of course, it's easier to be nice if you're not hungry and secure financially, which most of the real talents are. When you have to fight to put food on the table, the game and the rules probably change.
At least, that's how I see it...
Russ