I guess that makes sense. 12/21/2012, eh? That's an awfully loaded number. Where did you stumble across this information, anyway?
No matter what happens, what's the point in worrying about it? Unless we know exactly what is going to happen we can't prepare for it, really. I suppose it's still interesting to speculate about. At least I know how old I'll be when this "big change" happens, if it happens.
And as far as Y2K, most of the concerns were on a technological front for the average person, and there still were some problems in places, but we knew what was going to happen so we took care of it. It was a very real issue, but companies are good at working quickly to preserve their products when they need to. However, I believe most of the "end of the world" prophets were looking at 2001 (the third millenium), not 2000(Y2K), but I could be wrong. I consider Y2K still 2000, simply because it is year 2000, not the 2000th year if that makes any sense.