In my opinion, Collins is just a guy who hasn’t reconciled himself with the possible necessity of having to shoot and kill someone someday who is posing a mortal threat to him or his loved ones. That’s understandable. It probably makes him a better person than me since I don’t think I would hesitate personally, but... it could also get him killed and he should seriously consider that and get some training to help him come to grips with it.
I’d disagree on who is a better person. The thug in this crime will probably stab someone else again. Solving that problem and dealing with the aftermath makes you the better person.
In my opinion, Collins was very pissed off. When the pistol is in your hand and you -could- shoot, but something inside makes you want to BEAT the sob with that piece of steel, that’s rage. Pure home defense rage.
He done good.