Creativity ~= unpredictability.
The last thing we need is a "creative" computer system running the world.
I don't fully agree with that definition, but going with it for argument's sake:
Predictable or not (assuming we mean "predictable" here as "predictable by humans" [arrogant IMO]), if the ruling class (in this case sentient machines) is actually smarter, more powerful, and more able to rule the world than humans, than humans simply have no say anymore. It would not matter if the ruling computer system came to the (much processed) conclusion that humanity should be eradicated --
it would be a good and correct decision, because the smartest most powerful class of intelligence in existence has deemed it so.
So it also doesn't matter to a wolf when humans decide that a wolf-less world is better for them?