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.

If your going to trash people, please stay in your cave.
Idiot
Grow up old man. Crawl back into the cave you crawled out of.
Pos libtards !
I hope bought we we finished with having this a-hole in the public torture.
David now you are terrible and ignorant
Speaking of. Ignorant there you are
Hey Santa, go jump off the nearest bridge.
Ignorant and confused. ..
Letterman has always been a bitter man…remember he never forgave the Tonite Show that he wasn’t chosen to replace Johnny? And thus ( or perhaps before) it started.