In World War II, some Japanese soldiers preferred to take their own lives rather become prisoners of war. In Saipan hundreds of civilians jumped to their deaths over cliffs in order to avoid falling into American hands. Even in life-or-death situations cultural ties and duties often outweigh the instinct for survival. This is why people die in the attempt to rescue a dog from drowning, or decide to become suicide bombers.
Harald Welzer, Soldaten: On Fighting, Killing, and Dying
culture