To shoot or not to shoot

[mrkilla]

This is inspired from the Tookie Execution and really all the pro Lifers.

So heres the question

A man has broken in your house and a fight ensue's , as he makes his way out of your bedroom he fires a few shots, one hits and kills your wife/GF the other hits you in the side/stomach, he drops his gun, you grab it and chase him down the stairs and are now face to face with a stone cold killer, he's already shot at you and hit you in the stomach, you have a chance to live but probably won't. He starts heading out the door, but you are clear headed enough to take a shot at him what do you do...