There's a feeling of immortality you have in youth. You just don't see the dangers around you, or, if you do, maybe you're even excited by them.
Everything seems fine until you're about 40. Then something is definitely beginning to go wrong. And you look in the mirror with your old habit of thinking, 'While I accept that everyone grows old and dies, it's a funny thing, but I'm an exception to that rule.'
I like Jon Stewart. He's not as obnoxious as Dennis Miller, whom I really can't stand.