Nobody here claimed to engage in any self defense situation, more bending words and condensing comments by you to try to make yourself feel superior. Carrying a back up is just common sense because as people have pointed out **** happens, nobody knows when or where or how. You don't get to predict the time and the place. It has nothing to do with fantasizing or zombies or getting in a massive shootout or whatever BS you come up with to spin it. I would advise you to take a good self defense pistol course not a fly-by night course put on at your local gun shop but an actual defensive pistol course taught by real instructors firing at least 500 rounds and I am willing to bet you will change your outlook pretty damn fast because the number of malfunctions you work though will make you think about your environment and how you carry your pistol. Of course I think you know this, you are just being a troll. All of this is just time wasted on you. So really all of this written isn't so much for you, it is written for the people like the OP who are on the fence and not really sure of the reason behind carrying an extra mag. Gun's fail. Magazines fail a lot more. There is a member here that witness my carry gun fail. It is a sickening feeling when the gun you have been carrying to protect you doesn't work. In my case the connector on my Glock 19 had broken. I had fired the gun the day before just fine, no issues. When I went to squeeze the trigger it fired once and then nothing. I had one shot. Lucky I wasn't in a life or death situation but what if I had been? I would have been screwed unless that one shot did the trick. Do you take your gun and magazines apart every night and check it out to make sure everything is mechanically perfect? I highly doubt it. Guns and magazines break on there own even when we are not shooting them. To say you trust your gun and magazines 100% is just
That must be one hell of a gun, ammo and magazine combination you are using that you have that kind of faith. 
