Plenty of people have not stopped at the FIRING of a .45, much less at just the sight of it. Lots more have stopped at just the sight of a .22, .25, etc, bet on it, cause so many more of such guns are actually ccw'ed than .45's. No rational person wants to get shot,regardless of caliber. Only the truly desperate or deranged force you to fire, IF you get your gun visible to the attacker IN TIME for him to notice it and stop.