You are trying to rationalise something that can't be rationalised. Haven't you seen people in countries like Pakistan kill neighbours for petty issues or burn their own property due to some stupid cartoon. These aren't rational people. And then they get brainwashed by the fanatics.
Drone attacks create terrorist safe havens, warns former CIA official | World news | guardian.co.uk
Ex CIA official thinks that they are creating more enemies. And they don't just target the US, but anything in relation to them, including western values or way of life.
Please let me know where these people were before the US invaded.