In the deadly calculus of war, are we prepared to accept that a lethality ratio of a little better than 7 to 1 deaths is acceptably proportional, so long as the seven are somehow associated with the bad guys?
By that calculus, America should be perfectly happy to kill about 21,000 Saudis and Yemenis and whatnot in retaliation for 9/11. Except, oh, wait: we substituted Iraqis, didn't we, and raised the ratio by another order of magnitude.
Remember, it's the bad guys who have no respect for human life. That's why we have to kill so many more of them, than they ever do of us.
Or maybe I just never was that good at math.