Contemplating what the end of the world really be like, and wondering how long it will have been since all life on the planet had been unable to exist anymore before it happens anyway. Since the best evidence theory right now is the sun going red giant, the heat will hit a point where it kills everything before it envelopes the sun anyway.
And laughing at the people who don't realize the Mayan Calender is cyclical. They just had really long-term thoughts, and their cycles are LONG.