War will always lead to the death and injury of people who do not fit within the political motivation of the action. By removing the passion of soldiers we see how bad a lot of the data is. The data was always bad, but that was overshadowed by the suffering caused by actual malevolence. If a war is justifiable for humanitarian reasons the risk to civilians is probably worth it. Soldiers have lots of unintended consequences to civilian populations which drones effectively remove; this could be a good thing. Of course people said similar things about area bombing in WWII so I wouldn't bet on it.