I'd actually be more comfortable in the hands of a human surgeon than a robot one, simply because robots, like humans, are not infallible but at least I know a human won't shut down halfway through the prodecure. Think about it logically, if all the teachers were replaced with robots, do you think people would stand by and let their children be taught by them despite the fact that the robot teachers are more knowledgeable so "humans will be able to get their needs fulfilled"? I very much doubt it because people are afraid. They're afraid of things that are foreign and different to them. And I believe that the fear of the unknown will overrule human desire to "get their needs fulfilled."