There seems to be a definite economic drive behind the development of intelligent robotic technologies - personally, I think an 'off' switch is a good idea.
Even better might be actually paying human beings to work in a sustainable economy.
This post from last month links to a very interesting piece - 'The Rise of the Robots' - which itself contains links to many other interesting pieces.....post127231.html#p127231
Even more worrying is the seemingly inevitable move towards 'killer robots' - robotic military drone technology with the ability to make decisions on when and who to attack.
Ned Ludd may have had the right idea.