Invasion of Iraq: 1 civilian death for each 4.5 enemy deaths.
Drones: 1 civilian death for each 33 enemies deaths.
That makes drones more than 7 times more accurate than the invasion of Iraq. Drones killed an estimated 90 innocent civilians over nearly 10 years. The invasion of Iraq killed an estimated 8000 civilians, orphaning nearly half of the child population of 10,000,000. Now ask yourself, which is better for the civilians: A drone strike, or an invasion?