I go back and forth on whether the cloud subscription is a good idea for me right now.  I'm using the purchased version of CS6 and expect to stay on it for some time.  However, I'll probably get a new camera somewhere down the road and then I'll be forced into the cloud for an updated ACR.

If the subscription rate stays where it is that wouldn't be much of a burden but I expect when most people have been migrated to the cloud the price will go up.  When everyone has forgotten about CS6 or left it behind because of new features or new equipment support you just know the subscription fee will go up as much as the market will bear.  Given the dearth of options to Photoshop, that will be pretty high for those of us working on our own without the resources of a corporation.