Of course law abiding moral people would prefer a non lethal tool to a lethal tool, but the unfortunate fact is that the non lethal tool is, and most likely always will be, not as reliable as the lethal tool. The moral point then becomes almost moot, as it doesn't make sense to put yourself at greater risk just because you think it morally superior to not take an aggressor's life. Non lethal tools are very important, but I would never let them replace my lethal tool. The day the non lethal tool is a more effective man stopper than a lethal tool is the day I switch, but I don't really ever see that happening.
And it's Killer Angel... as in the book