Robotic researchers at Georgia Tech have created a wonderfully scary robotic dragonfly. I have always loved flying my mini-helicopter around the house but it is difficult to fly and the battery only lasts a few minutes, tops. This appears to be the answer to all the problems.
Just imagine the endless number of uses. Police and Fire departments, sporting events, photography, even the military (imagine pinpoint drone attacks where NO innocent civilians are hurt) could benefit from such technology.
Yes, the good always comes with the bad. You can imagine just as many bad uses for such a device. But let's face it, if we always focus on the bad things, we are destined to a life of suffering and disappointment.