"Look at the odds of falling into such a situation...."
dbeeksci you hit the nail on the head in my case. I packed a long time ago, but I learned I am a very intimidating person. I am 6'5" 250 lbs, and when the muscles relax in my face I just look dang mean. I found that the way my face looks combined with my size just scares the heck out of people.
This is my best story out of many: When in D.C. once, a friend dropped me off one night to where I was staying in a rough neighborhood. He drove off quickly, I was crouched over getting my bag ready to sling over my shoulder. Five gangstas surrounded me on the sidewalk, but dispersed when I stood up straight and they saw my height and the mean-ass look on my face.
Okay, maybe I still would have got slotted if it happened on a different night. But I've faced other potential instances many times and have never had any problem.
I've always been told "The bigger they are, the harder they fall." Problem is, not meaning to boast, they have to make me fall first.
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Me, a vegetarian? My set of teeth came with canines.