Well, they haven't suffered the great hardships yet. Islamic world hasn't been nuked yet. Japan and Germany rejoined the civilized world only after good chunks of them have been reduced to smoldering rubble. The islamic world still hasn't been reduced to such (some would argue it never rose above it either), but they certainly haven't seen yet what great hardship can be.
Also keep in mind the American public hasn't seen what great sacrafice means in over 40 years. In fact, the public nor the politicians have the stomach for it, yet.