Because every day im forced to drive an incredibly unsafe machine that has the highest chance of anything i interact with to kill me. A machine so unsafe that in the event of a collision, the safety systems could kill me. My knife has a seatbelt cutter and a glassbreaker, as do every one of my knives. Why would you not carry a knife? Do you carry your keys? Or your wallet? Do you out on clothes every day? You act like its some difficult process to grab my knife when i grab my keys.