I also would like to make a point on something but in order to do that first I invite you to imagine how is it like to fear just to travel some of your own country cities because when you are travelling there is a possibility of rocket or bomb ambush among the mountains. Imagine, teachers in those cities are captured and killed in your schools. Imagine regular people doing their job get rocket attacks thus get killed on a monthly basis. Imagine many more things like that could happen on a monthly basis in your very own country. Finally, imagine that this is going on for over 30 year and all of those attacks performed by single terrorist organization with ultimate purpose of taking control of approximately 1/4 of your country.

Now, do you think after thousands of death happend in your country for over 30 years, bombs detonated in your home cities. Would that death ratio still make sense while all of these events possibly still going on to you?

If still you think 1-5 ratio still make sense and we should stop defending ourselves against terrorists, I encourage you to do this mental exercise of imagining all of those events one more time and possibly see what are the typical reaction of countries towards this kind of hostility in their own lands. (Although I haven't done comprehensive research on 11/11 event, I think it possibly has potential to demonstrate how could one country go further when it faces with such terrorist attacks to stop it.)