It's a totally acceptable way for them to resist the enemy, just as it was totally acceptable and even laudable (from their viewpoint) for Japan's Kamikaze pilots. People in America may think it's a sign of desperation, but it's really simply part of their arsenal.
Albert Axell explains that Kamikaze pilots were part of the national military policy of Japan during the 2nd World War. He writes that Japanese Vice Admiral Takashiro Ohnishi noted that the most effective way to inflict damage to warships was to crash planes into them. Those attacks took the American fleet completely by surprise - they were bewildered by the suicide missions and completely unable to comprehend the mentality behind them. We learn, however, that the call for kamikaze pilots drew a staggering response, with three times as many volunteers for suicide flights as the number of planes available.http://www.amazon.com/gp/product/058277232X/104-0810021-9815949?v=glance&n=283155We eventually "defeated" the Japanese, with their willingness to commit suicide in attacks against their enemy. Will we use the same measures in Iraq? x(