Article continues below advertisementDavid Letterman has no regrets about leaving the late-night scene. The legendary host, 78, made a guest appearance on Jimmy Kimmel Live! on Wednesday, December 10, where he shared his thoughts on the current state of late-night television.Article continues below advertisementSource: Jimmy Kimmel Live/YoutubeDavid Letterman said he does not miss hosting late-night TV.Article continues below advertisementWhen Kimmel, 58, asked if he ever misses hosting, Letterman replied, "Boy, you would think, but no. I'm so glad to be out from under this mess.