Im excited for the movie, it looks like it its gonna be great. But as far as 2012 its dumb, I mean, like someone said earlier, tomorrow is never promised, maybe you're not here tomorrow anymore. 2012 should be the least of our worries.
Anyway, I think its a cycle, mother earth gets rid of any species that becomes a danger to others. We humans are the biggest threat to this planet and other species that share it with us. The best thing that could happen to earth is to get rid of the human race as a whole.
Im more worried about thieves, rapist and all of the P.O.S humans out there than some prediction about the end of the world. Im sorry, I don't mean to sound harsh but with everything else going on around us, I think this should be the least of our worries.
I use to believe in this when I was little, but that was way long ago.