AI a blessing or a curse??

Many wise personalities all over the world like Bill Gates, Elon Musk, Gary Marcus, James Barrat, Jaron Lanier,

Max Tegmark, Nick Bilton, Nick Bostrom, Stephen Hawking, Vernor Vinge...and many more oppose the concept of bringing Artificial Intelligence into power, because its hard to contain AI in a group of Algorithms. At-least AI is should be kept out of Defense Services of any country.

No doubt that AI would give comfort to the human race but looking at the population count, question it "Do we seriously need it??? " AI would take away jobs of many thereby increasing jobless count!!!