Maybe, but I'm not willing to gamble with a clerk's life or safety any more than a patron's

I'm not even saying that you definitely should have a gun or that the proper response is always to shoot at an armed assailant. I'm objecting to the poster's apparent belief that quiet compliance is always the best policy.

Even if compliance was generally the safest route, every situation must be evaluated on the merits and as understood by the individual at the time and place their life is threatened. Owning and carrying a firearm simply provides additional options in a life and death scenario.