The reason that the year 2012, and more specifically December 21st 2012, has such controversy around it is because there are several old traditions that point to that date as being significant. Lets talk about some of these.
To begin lets go to Ancient America and the Mayan culture. They have developed a rather renown calendar that has created quite a stir. The ancient Mayan culture created a calendar that is linear in fashion rather than cyclical like ours. It is broken into several smaller parts that combine to create major periods called Baktuns that last just over 5,000 years each. According to this calendar around December 21st 2012 the end of the 12th Baktun and the beginning of the 13th Baktun occurs. According to their writings this is a significant time of major change. The era of this 13th Baktun is a higher age supposedly. Many westerners believe this is to be the end of the world as we know it. No real evidence exists in the culture to say it is the literal end of the world like the new movie would suggest.
Interestingly enough we have evidence form other cultures that point to this date as significant too. Another prominent one is Nostradamus. He was a student of Astrology or the study of how the planets are in position at a given time and how that affects us. Before you completely discredit this concept you do need to realize that planetary position does play a big role in life on this planet. The easiest one is to realize the gravitational effect the moon has on creating tides in our oceans which create wind that drive weather patterns. In a way it does matter. Maybe they have found patterns that represent things. In the scriptures we learn that the planets and stars are for signs and seasons for us. In his writings he talks about a time when the sun passes through a certain place in the sky in between the archer zodiac symbol and the scorpion symbol. When this happens there will be a significant change in how things go in this world. It points to a new spiritual time or rebirth. Many believe this will be the armageddon time before the Savior comes again.
I'm not so sure Armageddon will happen at this time. It is interesting to note that if you were to point a telescope at that particular point in the sky you would be looking directly to the center of our galaxy. Thanks to computers scientists have built a model of the solar system and by using star charts from Nostradamus' time they have figured out where all the planets were at that time. They fast forwarded their model until it reached the moment the he was mentioning. The date that corresponded to this moment would be December 21st, 2012. What this means is that for a brief moment you will be able to draw a straight line between the earth the sun and the center of our galaxy. Is this coincidence that two completely unrelated groups would come up with amazingly similar answers or is there something to this. Scientists do know that as the earth rotates and wobbles on its rotation that it goes through a minor change in degree angle of one degree every year. Every 26000 years this minor change comes full circle and goes back. This just happens in 2012 where the earth will have a tilt to encourage a good look toward the center of the galaxy.
Could this be a sign of something to change? It could. From a religious perspective, using astronomy has been around for a long time. We know that a new star in the sky was the sign given of the birth of the Savior in Jerusalem. In china around the same time their astronomers record such a phenomenon occuring which modern scientists believe was a super nova. That is when a star like our sun explodes and blows it outer parts off in a major blast. They are the brightest thing in our universe. There are other times when the stars were used for signs as well. So God can use astronomical things to further his work on the earth. We do not have much concrete evidence suggesting that God will use this 2012 event for his purposes or not. What I do know is that God tends to use patterns as he relates with us on this planet.
If 2012 were going to be Armageddon there are a few things God needs to do first.
In the book of Amos we learn that God does not do things without telling is representative on the planet (Prophets) what he is doing. If they were told I'm sure they would feel it best to warn us too. Another thing to consider is how did he go about destroying other nations in the past? If you look at it what he usually does is send messengers to preach repentance and changing or else destruction will come. They preach until the people reject them and they are either killed or cast out from the people. Then God steps in a does the destruction without any more warning. In Soddom and Gomorrah God warned the people through Lot and others before letting Lot to leave. Then they were destroyed.
With Noah he taught for over a century then was told to shut the doors to the Ark just before the floods came. There is usually a warning before the destruction. So the thing to think about is have we already been warned or have we not been warned at all? I think it behooves us to study what the prophets have said and make sure they have not already taught us and warned us. Also, most things God does uses the laws of nature which we know a lot about. He does not usually do crazy things that can't b explained. He put the natural laws in place and he uses them to his advantage. To many things might not seem like they are a miracle or amazing since God follows the laws. Most of the time when God does something major the preparation and real signs are subtle and not easy for someone who is not looking to miss them. The best example of this is the birth of the Savior. Easily one of the most significant events in history. It happened in a way that only those who were prepared could see it. Everyone else missed the significance. God usually works the real stuff in quiet and secret ways. He doesn't do many major things too fast. Its just the people get caught off guard since they were not prepared.
So, what do I think will happen on December 21st 2012? I think it will come and go without any problems. People will be afraid yet they will even get up in 2013 and not seem like anything is different. That is not to say nothing will happen. It's that the real changes will be subtle and missed by most. They will be looking for a sign rather than looking with faith. I say study the prophets, ancient and modern, and understand the message they have for us while always being prepared to meet our maker. If we are prepared we will have nothing to fear. Follow the prophets and they will give us the guidance we need.