I filled in the blank mentally; "Why would you need to carry your gun to...
Luby's Cafeteria?"...???
My answer: Because a lunatic crashed through the window of a Luby's (in Killeen, Texas in 1991) and just began shooting; killed 23 people and wounded 20!
Now if such an odd and dastardly event can happen in a pleasant and benign place like Luby's... well, then... Just about anything is possible... and none of us can know when it might be coming.
One handgun owner lost both her parents that day, and she's sad that she wasn't carrying that particular day... And she testified about it to a congressional committee: