Why does everyone say "Narcissistic" like it's a bad thing?

Keith Olbermann's Ego is very unhappy that these psychiatrists and psychologists and wanna-be media "personalities" see being a narcissist like it's a bad thing. The Ego will not be taking this test but if the Ego did, he's sure he'd score at the top of the scale because as everyone knows, Keith Olbermann's Ego is a genius.