Watching the Discovery Channel in like 2007 brought up something legitimate that may actually happen and doesn't claim Earth will magically explode.
Oi, that's one of the reasons people don't consider the end being a
possibility. The Earth will not explode randomly- That has nothing to do with the end (in our terms at the moment. We may blow ourselves up, though...). Whenever I even bring up the subject with someone, they just say "Stop freaking out, the earth won't randomly explode." (Oh, and I'm not trying to be mean to you or assume what you believe, I just was using your reference as a little example. :P)
And yes, there is a lot of things that have a large or even some chance of happening in 2012. But, what can you do?
stuff happens.