The precision of modern war has drastically reduced civilian casualties. Also despite what some people might believe the US doesn't have a policy of deliberately targeting civilians like terrorist organizations.
Yes it's disgusting but the drone program is being run by the C.I.A. How do you think they operate? They are the U.S. bad guys. They do bad things.
It will be interesting to see how much aid Pakastan is given and accepts. If it remains at high levels since the O.B.L. incident then it's basically C.I.A. hush-up money at this point.