>>713025302A psycho with a knife is a lot less deadly than a psycho with a gun.
But honestly crime is only a fraction of my concern with guns.
The presence of a gun escalates encounters into deadly shootings very quickly.
Regular fights turn into murders. See: George Zimmerman
Cops have to assume everyone is armed and will shoot you at the drop of a hat just in case.
The presence of a gun in a house leads to accidental shootings, suicides, and domestic murders.
When you have a hammer every problem looks like a nail. When you have a gun every problem looks like a target.
Knives have alternate uses so murder might not even enter your mind with a knife in your hand.