The U.S. is using drones more and more under the Obama administration. Not so much, I think, because of Obama, but because the technology is bearing fruit at this time in the history of warfare.
Drones can gather intel as well is shoot missiles.
The advantage is that the drone pilots can be safe far from the battlefield. My father has a friend who has a daughter who flies drones in Afghanistan from a base in the Southwestern U.S. Then she goes home, after killing people during the day, to her husband and kids in the evening.
This is the future of warfare. Is it better or worse?
One thing to bear in mind: drones, like any military technology will be used against us someday.