It's because Letterman's show lacks HUMOR because Dave was never FUNNY but he has some GREAT GUESTS because of where the show is located like ESPN Mike and Mike and ESPN Dan Patrick and Bill Oreilly. Jay on the other hand is FUNNY AS HELL but never has GOOD GUESTS because his show is not in New York City. So If Jay was in NYC I think I would love more than his monolouge because he would have better GUESTS. Dave should be in LA not JAY-lol