I didn't vote but, if I did, I would probably vote "Unsure" which is the ONLY valid answer, imo. Nobody knows for certain when the end of the world will occur so trying to answer that question is impossible.
Even though it is possible that you could die in the next second, there isn't any reason for you to worry about it unnecessarily. The same goes for the end of the world, so why should it affect anyone getting through xmas?
Well. The title clearly says "Do you THINK the world will end in 2012?"
And for that i can easily say that i don't. can i say that i am 100% sure that is is impossible to happen? the answer is no, i can't.
So if you understand the title and still vote for unsure, then you most be very worried or have too bad of a life to give a shit.
ether way, you won't have a very nice Xmas.