Mayan Shhmapocalypse

It seems everyone is joking about the Mayan calendar, or is suspiciously serious about it.  I think people are reading too much into this end of the world speculation.  The Mayans lived hundreds to thousands of years ago, how could they possibly have a clue as to when our world will end if it will at all?  It doesn't explicitly say this is the end of the world in their texts, their calendar just ends.  This is probably what really happened:

3000 years ago.  In one of the first developing Mayan villages a scrawny young man chisels at a block of stone.  A tall muscular Mayan man walks by...

Scrawny Mayan speaks up: Excuse me, great leader.  I have to speak to you about something.
Great Leader:  What is it, calendar bitch?
Calendar Bitch: My name is Steve...
Great Leader:  Whatever Steve, what is it?
Steve:  I've hit a road block with the calendar making.
Great Leader:  What the fuck is a calendar?
Steve[rolls his eyes]:  It's the thing we use to know what day it is?

Great Leader nearly laughs at the ridiculous idea of needing such a thing.

Steve:  Well, we don't have a enough numbers.  We need to invent more numbers so we can count higher and therefore assign the dates when we get to them.
Great leader:  How many numbers are we up to?
Steve:  Orgsurg
Great leader thinks for a moment and grins.
Great Leader: You know how many women I've slept with?
Steve:  How many?
Great Leader:  Orgsurg! Gahahahaha!

Great leader is nearly in tears but Steve is not amused.

Steve:  This very important, Great Leader.  Didn't you read the last tablet I gave you?
Great Leader:  Nope, it's at the bottom of the lake.
Steve:  How did it get there?!
Great Leader:  I was gonna read it while taking a bath, but it just sank.
Steve:  I told you you shouldn't put any tablets in water!  It was the most advanced tablet yet, it had more meaningful applications than the last one, 3!
Great Leader:  I don't like reading so can you shorten it?
Steve:  I'll make you a mini tablet if you promise to read it.
Great Leader:  Done.  
Steve:  But we need to figure out this Calendar issue.  If we're not around, people might think it's some sort of expiration date for our planet.
Great Leader [looking confused]:  Expiration date?  Planet?
Steve [sighs]: Expiration date is like when you hunt and kill something, we have to cook and eat the meat before the bugs start living in it and the fuzzy stuff grows on it, or we'll get sick and die.
Great Leader:  Oh, I love it that way man.  Lots of extra flavor.

Steve is looking exasperated.
Steve:  Well, we need to figure this out, we may not be around forever.
Great Leader:  Of course we are.  Those gods from the sky temples got our backs.  What did they call themselves again?
Steve:  Jedi or Vulcans, can't remember.  I hope they come back soon, I need new tools.  Oh and more wall space, I ran out of room for the rest of the calendar when we have more numbers.
Great leader:  Don't sweat it muchacho.  Maybe gods will come from across the ocean and bring us more numbers, then your problem will be solved!  
Steve:  I don't know if we should trust anyone that comes across water.  Sky? sure.  But the Ocean, I feel like they wouldn't be looking after our best interests.
Great leader:  Whatever.  I'm off to kill some stuff and sacrifice some shit so the gods come back.  See you later Calendar bitch!
Steve:  It's Steve... [but he's already out of ear shot]


Anyway, I feel like this is just as plausible as the end of the world.  And who knows, maybe that Calendar/tablet making savant was reincarnated in a leadership role later on in history.