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.

And letterman you are the worse I have ever seen in my life.
Stupid…
Another idiot, go figure
Another limousine liberal.
You are a moran
This bozo thinks President Trump is ignorant… He’s a total idiot & always has been
Didn’t watch his show so no reason to listen to him now….!!!
Rich, old, irrelevant idiot. He’s just swimming downstream with his liberal buddies.
Letterman, a comedian. Who had to have writers to make his show funny…
Letterman’s an old fool.