That probably is a "personality type" thing or something. Some people seem to value "justice" (and this way may want to punish somebody) instinctively. I value comfort, security, freedom and avoid wasting energy on anything which is not a big investment in these. If somebody would wrong me I would only invest myself in punishing him if I had a good reason to believe that's really going to scare whoever might be planning to wrong me or somebody else in future.
And I would not write about this if I wasn't curious about how does this work. Why do some people are the first kind and the other the second? Isn't energy conservation and danger avoidance a fundamental program of every living brain? Why would somebody really want to hurt somebody who isn't a threat any more? That feels so alien to me I become extremely curious.
Why? I can't imagine feeling this way for longer than some minutes.