He may not have 10 hilarious reasons, but David Letterman really needn't offer any explanation for why he might want to keep doing The Late Show beyond the year and a half he has left on his contract.
"The way I feel now, I would like to go beyond 2010, not much beyond, but you know, enough to go beyond," the 61-year-old funnyman tells Rolling Stone in its new issue. "You always like to be able to excuse yourself on your own terms.
"If the network is happy with that, great. If they wanna make a change in 2010, you know, I'm fine with that, too."