While I do think UAV development is a net benefit to the U.S., its utilization by our enemies is troubling. The technology is much cheaper and more versatile than other more traditional systems, and I fear that puts our soldiers and assets at risk.
I will say that I’m not so sure it minimizes civilian casualties. While UAV’s do have the ability to provide targeted strikes in theory, those strikes are often carried out on bad or incomplete intelligence. Oddly enough, it seems that the CIA has actually become the preferred American UAV operator over the DoD. Perhaps the CIA is more skilled at synthesizing intelligence and targeted strikes.