And using a knife to kill effectively comes naturally? I don't buy it.
Lol. Buy whatever you want. It’s your funeral.
One disruptive aspect of knives, boots, and broken bottles versus guns, is that a group with knives can overcome a single knife-armed victim with fairly low risk of any of the attackers being seriously harmed. A victim with a gun is likely to seriously injure at least one of his attackers, even if they have guns too. Thus, cowardly predators are more likely deterred in an environment where many potential targets may be armed.