Oh, I don't know...maybe because sum dood could show up and threaten to bash your brains out with an axe.
The threat level out there is high. I don't go without a gun these days. I may have to leave it in the lockbox in my vehicle on occasion because of state law, but if I can have it, I have it.
If you don't have a concealed carry permit, you need one. If you have one and you don't carry, you need to start. It really is that simple now.