well, if you dont swap a manual steering rack into your car, you better be pretty friggen buff, because its NOT EASY to turn the wheels without power steering..
if you swap in the manual rack, its quite a bit easier..
but, the thing is, the power steering system weighs less than 20 pounds, and doesnt take any noticable power to run it either.. the VW system uses a TINY pump compared to other systems ive seen. as long as you dont have issues with keeping the belt tight, i would just leave it there..
you get TONS of road feedback thru a power rack without it hooked up to power steering. you get none of that feedback thru the manual rack, like with the power rack..
i daily drive an 86 GTI with manual steering, and boy, let me tell you what, its NIGHT AND DAY different, driving my 92 jetta thats equipped with power steering.. the jetta handles and steers much nicer..
if it were me, and the system is good, and completely functional, i would leave it there, and maintain it..