It goes in both directions... We should all be scared of the time when lunatics discover how easy it is to arm commercial drones. Drones are becoming increasingly available and easy to use, and as they become more sophisticated, it is only a matter of time before someone with malicious intent figures out how to arm them. Once that happens, we could see a whole new level of terror and violence, as drones armed with explosives or other weapons could be used to target civilians indiscriminately. Even worse, it would be very difficult to defend against an attack by armed drones, as they can be operated remotely and are very difficult to shoot down. In short, the potential for misuse of armed drones is extremely high, and we should all be worried about the possibility of them being used for nefarious purposes.