I think, to a certain extend it is expected of entertainers. They need to
be approachable and lovable by the audience and their fans in order to
remain famous.
One example is Van Morrison, whose music I adore. Yet he couldn't
overcome his stage fright and shyness, and despite his talent and great
music, he fell behind in popularity.
Would I like to be famous? Not in your life!!
In high school I was in a theater group, and it was so much fun rehearsing
and being together with the group, but when it came to performing in front
of an audience, I was petrified and looked like the infamous deer caught
with the headlights. It was just awful. Needless to say, it ended my "career"
on the spot.