Yes, look at the record. They took out some serious Islamic bad guys. Unfortunately like crowtrobot mentioned they don't discriminate and have a record for taking out Islamic guys/gals/kids who are not bothering anyone. Incidental casualties.
Yes, our drones have kiIIed lots of bad guys who would otherwise be alive and setting off bombs that could kiII hundreds of people. The drones force them to keep their heads down and stay out of sight. So even when the drones aren't kiIIing bad guys they're still suppressing them.
Imagine this: A guy goes into work and sit behind a screen and uses it to target 'bag guys' from an aerial drone and bomb them. He just did aerial combat, and then after that, he gets to go home and play with his kids.