In my opinion, modern terrorists are cowardly misfits, hiding behind various religious masks that themselves belie what they hide. Much in the way the lost boys in Peter Pan escaped the reality of their world, terrorists are angry misguided adolescents, refusing to take responsibility for themselves in any functional way. Terrorists strike out against their twisted self contrived perception of reality. Perhaps they are also tilting at windmills, but I am less familiar with that story.
Perhaps I am angry, as well.