It's not the "End of Days", just the end of the current Age of Mankind according to the Mayan Calendar's "long cycle". The next cycle (or Age) starts right after. Just because they didn't "publish" the next calendar, doesn't mean that time stops (or the "world is over"). Their civilization just didn't stick around long enough to do the next "printing". See our Article featuring "The SEVEN AGES" ( https://hubpages.com/politics/7-Minutes-to-Midnigh... ), and look at the last two Ages as an example.
Whether this actually means something significant for our current world civilization is another topic. Many people agree that we are on the cusp of a great transition in the world. I feel that this is simply Biblical Prophecy unfolding before our eyes, but NOT quite the "End Times" yet. We are just at the dawn of a blessed NEW ERA. Whether it happens exactly on 2012 is another matter, but we are close, none-the-less.