@Render,
Quote:Would you kill someone who was very old or was likely to die soon anyways? To save your own life if you were 16 for example.
You are changing the question...
The question "Would I kill someone who was very old..." has nothing to do with morality. People often act in immoral ways.
If you are asking "would it be moral to kill someone who is very old to save my own life", the answer (in my system of morality which I think is typical for any modern Western culture) is clearly "No". I don't consider it moral to take another life to save my own. The only possible exception is in cases of self-defense (and I am not even sure about that).
And the converse-- "would it be moral to give your own life to save the life of someone who is very old", the answer to this is clearly "Yes". You may argue that it is irrational or stupid, but it certainly is moral, in modern Western culture, giving up your life for another is celebrated.