Robots will never take over the thinking process of machines, at least until they can creatively think for themselves, any scientist will tell you it just isn't possible right now especially since robots can be outsmarted by a paradox.
Yeah we don't know what will be happen in future, technologies have developed rapidly.
We hope can get good service from the robots.
Service maybe.. But it sure as hell won't be good food. (Calling it food is really a stretch, makes me feel dirty to call it food)