Sakai Saburo's thoughts, from "Samurai"...
"In 1942, none of our fighter planes carried pilot armor, nor did the Zeros have self-sealing fuel tanks, as did the American planes. As the enemy pilots soon discovered, a burst of their 50-caliber bullets into the fuel tanks of a Zero caused it to explode violently in flames. Despite this, in those days not one of our pilots flew with parachutes. This has been misinterpreted in the West as proof that our leaders were disdainful of our lives, that all Japanese pilots were expendable and regarded as pawns rather than human beings. This was far from the truth. Every man was assigned a parachute; the decision to fly without them was our own and not the result of orders from higher headquarters. Actually, we were urged, although not ordered, to wear the parachutes in combat. At some fields the base commander insisted that chutes be worn, and those men had no choice but to place the bulky packs in their planes. Often, however, they never fastened the straps, and used the chutes only as seat cushions.
We had little use for these parachutes, for the only purpose they served for us was to hamstring our cockpit movements in a battle. It was difficult to move our arms and legs when encumbered by chute straps. There was another, and equally compelling, reason for not carrying the chutes into combat. The majority of our battles were fought with enemy fighters over their own fields. It was out of the question to bail out over enemy territory, for such a move meant a willingness to be captured, and nowhere in the Japanese military code or in the traditional Bushido (Samurai code) could one find the distasteful words "Prisoner of War." There were no prisoners. A man who did not return from combat was dead. No fighter pilot of any courage would ever permit himself to be captured by the enemy. It was completely unthinkable"