There's a debate about whether Zimmerman should have been carrying

[The Magistrate]

159. He Wrote What He Wrote, Sir, and That Is Window To the Soul

The person who wrote the account you linked to first in this exchange is indeed a creature fizzing with the desire to shoot someone. He may be able to mask in certain situations, and pass, but really ought to avoid trying evocative prose if he wa=nts the imposture to be seamless. That he amy be skilled with a pistol says nothing about his personality or drives, and hardly argues against the proposition he is obsessed at a fundamental level with using a gun on another human being.

As you concede my point that actual instances of legitimate self-defense are vanishingly rare, we have really nothing further to discuss, unless you want to explain why something you acknowledge is incredibly unlikely to occur consumes so much of your thought and effort, and looms so large for you as a matter of public policy.