The characters in 3:10 were very well sculpted. The bandit portrayed as a devilish man does have moral groundings (in a sense) to a religious source. He is as much a normal man as Bale's character, albeit he pillages.
The scenes following their arrival in Yuma ended the movie with a punch. A few of the people I watched it with weren't too enthralled, but if you look at deeper meanings then you will enjoy the movie that much more.

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do not hurt where holding is enough;
do not wound where hurting is enough;
do not maim where wounding is enough;
do not kill where maiming is enough;
the greatest warrior is the one who does not need to kill.