Yup. Let it rest a little and smoke it up. The problem with waiting till the world ends, is well...when the giant robots come out of the ground and Tom Cruise is running around all crazy are you going to have time to really enjoy the flavor of the cigar? Can you detect the flavor of granola smoothie with the smell of death and destruction floating in the air?
Unless of course you're going with the whole rogue meteor , the size of Texas, is barreling down on us and we only have a week to live scenario. That might be ideal, assuming that the populance as a whole remains calm. If everyone starts rioting and all that jazz would enjoying a cigar would be difficult as well.
Then there is the rapid spreading disease, which may or may not turn you into a zombie/vampire. This one might be difficult at first, but I guess if you could survive the intial onset and get yourself set up, ala "I am Legend", then you might have time to kick back and enjoy a good cigar. Not having anyone around to enjoy it with might be a downer, but your mileage may vary.
Or it might be a rapid onset climate change issue. As not to get political, I will just say that a huge artic hurricane will probably throw the rH% in your humi way off and make the sticks to dry to smoke.
And....to top of everything else...The world is going to end on Dec. 21st 2012. Seriously some Mayan dude like 3,000 years ago stopped his calender on that day? Look it up.
OMG... I got get back into my under ground bomb shelter, my foil hat fell off.