Pixelart,
I practically live in Photoshop and use it at least 50 hours per week, sometimes more. Yet, I stayed with CS6 13.0.6.
This setup, including my various machines, will be my Photoshop workstation for life I can fully understand your position.
Once you're satisfied with something, there's no reason at all to upgrade. CS6 is already bloated; I don't need any of the nee features announced so far.