Yeah, I'll definitely celebrate. 
Pity that people are going to commit Self Delete. :c
Well, they say 2012 because the Mayan calendar ends there. Except the Mayan calendar was used to measure that one era, so then 2012 marked the end of an era. Not the end of all we know. Nostradamus, however, predicted all the events happening in 3734. I'd rather go with him.
Nostradamus's predictions were so vague, I would be surprised if any of them didn't play out.