"All gun deaths would be something to avoid, I think we could agree?"
Of course, but if it's the "kill or be killed" conundrum, if someone tries to kill you and you protect yourself with a gun then your gun has saved your life, but the stats will simply show there was another gun death and be used to claim that we are safer without them. Despite it actually saving you.
"You may argue that those deaths would have happened another way without a gun, but I just don't buy it. A gun can be grabbed, and used instantly from a distance, to kill someone - a knife, a bat, an ashtray, all requires actually approaching the other person, an actual physical assault. "
We can only speculate there. Maybe the absence of a gun would result in a saved live, but maybe it wouldn't. Maybe the absence of a gun could cause an innocent person to die. But that's just speculation.