In an interview with Rolling Stone magazine, David Letterman admitted that his inability to generate viral videos led him to retire from the "Late Show."
"I hear about things going viral and I think, 'How do you do that?'" the 68-year-old told the magazine. "I think I'm the blockage in the plumbing."
But Letterman isn't bitter about his exit.
Despite the tough competition in late night, Letterman has some glowing praise for his colleagues. He calls Fallon's style "bright and colorful" and says Kimmel is "friendly" and "very sweet."
"If you look around at the other people doing it and look at me, it's almost like a pair of shoes you haven't worn in a hundred years," he said. "'Gee, I think we can probably get rid of these.' I still enjoy what I'm doing, but I think what I'm doing is not what you want at 11:30 anymore."
Letterman's last show will be May 20, reportedly with a group of big stars: "Tom Hanks, George Clooney, Jerry Seinfeld, Oprah Winfrey, and one of the Obamas. Even former nemesis Jay Leno has been invited."
The new host of "Late Night" will be Stephen Colbert who left Comedy Central for the gig. Colbert will take over starting September 8.
