In my opinion upgrading is half the fun of it. If you have the money and time to do it that is. I'm in the middle of a frame upgrade on my touring. Yes you read that right, a frame upgrade. I've upgraded nearly everything else to fit what I want the bike to be and do. However, the frame I started with wasn't belt capable and could not have a 'shudder' Kickstand. New frame gives me both of those abilities along with a slightly lighter and much stronger frame.
Shawn