Oh, settle down there across the pond! Ya'll know what kind of rednecks we are here in the US! This should not be news...
Between the cash and the drunks, anyone who owns a bar (like Riff Raff) needs to protect themselves as a matter of course. Ditto for a LOT of other professions - so yes, in some ways, things CAN BE that bad, depending one one's circumstances.
But most people that carry guns in the US don't need to - they do it just because they want to or because they can't very well distinguish between what they hear on the news and what happens in their life. I tried concealed carrying a couple of times when I lived in a more firearm-friendly state, and I did not care for how it felt - it was like I was deceiving everyone around me, including my good friends.