Sorry Mustache 6, I most disagree with you more than I agree.
Competition is good. It provides stress and assists in learning to cope and perform. However, you fight the way you train. Most shooting competitions today, because time is the critical factor, eliminate defensive, "tactical" shooting. First, the course of fire is known and then gamed out for reloads and target shooting order to reduce your overall time. Yes, there are shooting boxes at barricades, but shooters don't shoot with the absolute minimum of exposed body, instead they lean as far as possible and necessary to engage multiple targets as quickly as possible, not engaging the first visible target while remaining behind cover from the others. Shotguns get barrels and magazine extensions leaving them longer than a Mosin Nagant 1891 with fixed bayonet. The mods, adaptations and ammo carriage for reloads are used only in the match environment. I could go on for half a page on the handguns and rifles as well.
I freely admit that there are game generated solutions that have gone mainstream in the shooting world, including defensive use. The RMR on handguns is an example. 45 deg offset backup sights on an AR are another. And yes, there are divisions where you can use actual practical guns, holsters and other gear. But if you run the match with a game mentality in regards to how you shoot the stages, you may win the competition, but you aren't doing yourselves any favors when the targets shoot back. If you've got friends with a similar mindset, you can compare your scores to them for competition value, but you will never place against those who put time as the prime consideration.