It may force people to take action against it, by at first dealing with the murderer then eventually establishing courts and what not. That action may morph into a kind of moral code.That has always been the worst and most irrelevant response. Who cares what other people want, realistically? Does me not killing one person have anything to do with whether someone kills me or not? Probably not. In specific instances that rationale would make sense, such as when you are in a room full of people who want to kill one another. Most of the time you killing someone wouldn't impact whether or not you are killed, so the question is irrelevant as it relates to its inherent immorality. To do that you have to find out where your specific moral code comes from.
When it occurs to a man that nature does not regard him as important and that she feels she would not maim the universe by disposing of him, he at first wishes to throw bricks at the temple, and he hates deeply the fact that there are no bricks and no temples
-Stephen Crane
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