David Letterman’s 33-year run on late-night television was marked by his acerbic sense of humor.
Upon retiring in 2015, he’s undergone a metamorphosis into someone almost unrecognizable from the more comedic guy people watched on the “Late Show with David Letterman”.
He’s grown a full beard, which coupled with his balding head, makes him look like a guy wanting to moonlight as a department store Santa Claus.
But beneath that kindly-looking exterior lurks a clearly bitter and troubled man, as evidenced by recent nasty remarks about President Donald Trump.
It’s spelled out on the next page. See how the funny guy seems to have lost his sense of humor.

For a Hoosier, Letterman is an ignorant person
Thought this blowhard was dead.
Letterman is a loser and a desperate old man!
lost my interest from word one
This man is no longer funny or entertaining. Bitter old man.
Old dumb f**k
IGNORANT IDIOT FOOL.
stupid person
Letterman is the ignorant one.
Ugly beard!