I stopped carrying just to carry when I was a kid. Kids have a tendency to use what they carry. Had a few incidents like that as a kid. It was stupid, but I do carry a knife just in case.

Once I am going to watch my grand daughter when she was a baby. My car would not start so I took the bus. I did have it on me for some reason. I am walking and these two teenagers are walking their pitbull. I see it so I move to the side. They pass and I can see them laughing probably at me for giving them a lot of room. Then I start laughing because if I even thought I was in danger their would be a dead dog and two dead teens.