this is something i always think about the day after a school shooting, as there are like at least 100 people crowding next to each other in lunch areas and hallways. Part of the reasoning is probably because most of us haven't shot a real gun, so we're only use to knowing how guns work in video games where you hold down a button and 50 bullets spray directly into their heads, whereas you dont have a crosshair in real life and hitting them where you aim in a panicked area with people running, recoil, screaming and all that would put you off.
also everyone in this topic has been put on an fbi list gj op