Robots can never rule the world - Why?

Is it even valid to assume that robots will be evil in the future and would seek to control humans? It is likely that in the future we will see different types of intelligent robots with different allegiances (just like human beings). AI is already being experimented with in many countries and tech companies. Thus, robots with different human groups may fight each other, but there is no chance that all robots will fight all humans. Also, It's not necessary that robots are either gonna fight.