To my way of thinking, apart from self-defence the other justification for killing is consent. If someone of sound mind asks you to kill him or agrees to you killing him in order to achieve some goal that he cherishes, then it seems that you do not wrong him by so doing.THe law does call that murder or accessory to murder though. In the state of Oklahoma- Shooting with intent to kill carries the same penalty as attempted murder. In my mind Kill and Murder are one and the same. The end result is the person's physical body ceases to function in any capacity other than decomposition.
The law may not call that murder. But then we're into a problem of use of language again - we only call it murder when we think it's unjustified...
I don't know if I would ever say someone of sound mind would ask you to kill them. Extreme pain or hopelessness would cause someone to be desperate to rid themselves of that feeling. Those people generally commit suicide, which I think is wrong in a spiritual sense.
Is it justifiable for the state to execute death row inmates? Recently a person I know killed a police officer and crippled another. He was given a death sentence by lethal injection. Another person I know (I am beginning to believe I need to reevaluate the people I am around) killed a man by shooting him in the back. He was given life with possibility of parole. Why is the standard of who is sentenced to die different for each person? The first did not plan on shooting anyone, the second did. The first had never been to prison before. The second had been to prison at least twice. By looking at those factors- is it justifiable to kill the first man but not the second? Both caused the kiss of life of one person. Both fled the scene of their act. Ironically they are both similar in age.
I don't feel guilty for what I did overseas. I don't know how anyone else would view the situation soldiers are placed in. I was part of supply, I wasn't on the frontlines. I can honestly say that it didn't matter to those shooting at me. They hated me for what I represented - a foreigner in their land opposing their belief system. That being said, I know many people who have killed someone out of self-defense feel guilty for taking a life. I don't know if I would feel the same or mentally detach myself from what I did like I have my military past.
"If it ain't broke, don't fix it." NF from Motto