I work in downtown Seattle everyday on the road making many different stops, and taking breaks in the worst areas of Seattle. I'll park next to a homeless camp sometimes and take a break also, not sure why. I don't know, I'm not too worried myself when I'm out there. I've spent a chunk of my life living in my car and having a horrible addiction, so I'm pretty comfortable around street people. I think they recognize that, and see that I don't represent a threat and show respect to everyone I come across.
That said, you never know when a loose cannon will cross your path, someone who's so gone off whatever they're on that they can no longer perceive real from fake, reality from hallucination, and they just start swinging. I carry an embarrassing amount of knives on me each work day, usually 3. I for sure mainly carry them because I think they're awesome and love to play with them, fondle them, and use them every chance I get. However whichever folder is in my right front pocket is my, if ALL else fails, I couldn't talk my way out of it, I'm outnumbered/overpowered, can't flee, LAST resort weapon. Opening all my knives, unless it's brand new, is very second nature for me and engrained in my muscle memory, so that's nice. But yeah, I try to just be a peaceful, humble, respectful person, however do absolutely think about what I'd do in certain situations and always try to have exit strategies.
Edit: I'm also a gun guy though and have always loved guns. I have a S&W Shield 9mm, and a Ruger LCR 9mm currently. However at this moment concealed carry permit is out of date, and most of my time in sketchy areas now days is while working where I don't really feel comfortable carrying.
Edit 2: I bought this guy originally as a designated self defense blade. It's a bad mofo and works great with the wave opening. So far I haven't really used this for any edc type chores because I've wanted to keep the edge on it tip top. However I ended up not really carrying it very often. I really like it though.

