Some like it cuz it equalizes their mediocre level of one discipline in your case the shotgun mr. paul ...
On a serious note I just don't think the rifle is the right tool to run short and close up courses of fire nor was it designed with that in mind , as per shotgun that is even more true, a bird gun designed to please the English aristocrat turned into a close combat fast shooting tool with some practically unrealistic reload pouches hanging on your waist.
This does not mean one can't be mediocre if decides to play one game only, I make a good example of that.