This is indeed an interesting topic, but this thread is about the WWII...
That's true but the whole idea of Death before dishonor originates from the samurai class and Bushido.
When I made the reference to terrorists, I wasn't talking about killing civilians. Samurai did kill civilians to test their swords, but that's another issue. My point was that they craved death. Books like the Hagakure promoted a culture of death. In this respect, they are similar to modern day terrorists.
I don't really think you could say that the Japanese of WW2 died for nothing. They died fighting for a chance to make them a dominant global force. If America and it's allies lost, you would be saying the same thing about them.