So are you. You preach a dogma spoon-fed to you and believe you are righteous in your holy war. But you aren't.
What, the dogma that things that kill people kill people? There's no disagreement there, so the truth value doesn't even come into play.
After that comes the implementation of killing. I do believe Muslims would have a problem if we loaded several planes full of them and then crashed them into buildings full of other Muslims. So there's no disagreement that that's a bad thing.
The only practical disagreement is in the fanatics' beliefs that Muslims are the only ones who count. This lack of reciprocity leads to a psychopathic mindset. A Muslim wouldn't stand for a psychopath targeting them, so again there's no disagreement that that's a bad thing.
They would feel towards terrorists targeting them the same things that we feel. The only issue is in the lack of balance in their beliefs -- their conclusion that we aren't equals, and we don't get the same moral position towards their terrorism that they would get if we were on the same unholy crusade. And you cannot fix this lopsided view through appeasement. If a con artist is taking you for a ride, you won't get him to stop by throwing MORE money at him. He doesn't respect you, and the more money he gets out of you, the less he respects you. Passivity just doesn't work -- you give him no cause to reexamine his moral structure.