I think being prepared is the most of a reason to EDC a bigger knife. I know knives are tools but lets be honest, I dont carry a gun unless Im hunting or target practicing and a good size knife makes me feel a little safer in this world, weather it be for protection from some type of animal (4 legged or 2 legged) or I do get stuck out in the woods and need a larger knife for cutting limbs and stuff. You never know whats going to happen in our every day lives. I think knives is just a tool that man has carried since the beginning of time and its part of us. I know with out a knife I feel naked. I wont fly just for that reason. Having a larger size knife, weather I need it or not, makes me feel better just having it. Thats just me. I know when I was a kid, I had a boyscout knife and I thought I could kill the biggest bear with that thing. It made me feel safe and made me feel like I was an equal and that I had a chance to survive. I know, weird huh? Other than it being a tool to me, its also a security blanket. Dam I cant believe I just said that.