I've asked myself this same question many a time, and I still come up with the same answer. Most of you may find this disturbing.
If I was trapped in this situation, instead of simply shooting the person, I would slowly kill him. Not for my own pleasure, but for knowledge. I would take notes as to how he acted while his soul gradually departed from his body: what were his last words, how did he handle pain and sorrow, what was his reaction to helplessness, how did his screams of terror compare to those of agony and despair, did he pray and if so what was his religion, etc.
Some of you may find what I have said as sick, disgusting, and disturbing. You may even call me a psychopath. However, as I previously stated, I would not do this for pleasure but for knowledge. To know how how people react in the face of helplessness. To discover the true worth of a person's life. To see what lurks in the depths of the mind and how to break it.
I'm curious to see how people react to this comment. Hey, at least I'm honest.