As the title says because it seems rather strange that people were suddenly taking offense with each other and heading out into the field to just shoot one another to determine who the winner was. Like did some guy just propose it one day and everyone just went with it. Or was it a natural development from sword fighting and the like.

Honestly this is just an interesting concept that popped into my head while watching something that involved a duel. Because it just seems weird that everyone in high society would agree that the best way to deal with a problem is to walk 10-20 paces from it and then fire a very inaccurate gun at it.