Robotics, useful or potentially dangerous?

Robots are created to mkae the world a better and easier place to live, and I have to admit, they have! Cars , computers, TV's....they have all been great! But what if they go too far? What if they try to invent something so crazy, so helpful, that the robots become so smart and everything becomes a total disaster. It could ruin life as we know it if roobots take over the world. Imagine, killer self automated lawn mowers, or self-controlling robots that are programmed to their advantage. It could be very disastrous for ALL of us!