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.

Still a douchebag!
Letterman is ignorant.
Sad what’s happened to him.
Stick to retirement you unfunny libtard.
I never did get his humor.
Him and brother Jack were born the same day and year……So you know he’s an old fart!
Letterman you are a self absorbed liberal elites moron!! In out words you are IRRELEVANT
I am enjoying Letterman,s pain more than I ever did any of his shows.
Letterman:
Irrelevant…..
Never liked him. Always spoke to his guests in a very condescending manner, and he wasn’t even that funny. Now he’s just completely loony.