Funny this thread, which i had not seen before, should raise it's head at this time.
Over the last few weeks, Sally and i actually watched a number of doco's on the exact subject.
Maybe the festive season gave us food for thought
Sally believes it to be the end of an era, not the world so to speak.
The fact that the Mayan calander goes no further, i believe is coincidental, rather than a Sign of Doom.
I don't have much to add to this discussin, whowever it has given me (us) a lot more to research as a point of interest.
Thanks to the OP for the informative post and everyone else for their views, which also gives more angles of thought.