Strange, I don't remember saying a thing about personal protection.
FYI, I carry a knife with me every where I go. I don't walk out of the house without it, and it is not because I am afraid that someone might attack me.
But, please, keep putting thoughts inside my head, and telling me how brave you are.
I have a little Kershaw switchblade that I always have with me. I open boxes and packages all the time. A knife is as vital as a pen.
Amazon.com: kershaw assisted opening
Small enough to carry easily. Large enough to get the job done. Push button automatic.
Boker Kalashnikov Automatic Knife Grey Handle (3.3" Black Serr) KALS74B - Blade HQ
I have carried a knife since I was six years old. One of the reasons my European friends call me a barbarian.