Why so many changes?

I just don't understand this need to change things, over and over again, especially when they were working just fine.  On an intellectual level, I understand that things need to grow and change over a natural course of life, but I don't think that change just so you can say something is new, and therefore somehow better, is being any kind of authentic.  But that's just me, and I find myself disappointed with the world as a whole right now.  It's probably just my routine end-of-the-year blues, and the change in the weather, and the cold that came a bit sooner than expected, and all of the changes I've experienced over this last year... and I'm rambling.  2011 has been a tough year.  And now it's about to be over.  I can't decide if I'm looking forward to 2012, or just ready for this year to be done.