At first, I wondered if "peaceable" was even a word, so I looked it up.  Here it is:  "peace-loving, nonviolent, nonaggressive, nonconfrontational, easygoing, placid, gentle, inoffensive, good-natured, even-tempered, amiable, amicable, friendly, affable, genial, pacific."  This certainly doesn't describe anyone who would own a gun, as they always have in their minds the notion that they might have to shoot another creature, for whatever reason.  Some are able to contain themselves and avoid doing so, while others go out looking for an excuse to use their weapon(s).  (George Zimmerman comes to mind.)  Most, I suppose, fall somewhere in between.

I would hate to have to go through life thinking I needed a weapon to "defend" myself.  Always having that notion in the back of one's mind must be a terrible burden to bear.  I do know that gun owners would NEVER understand this.  Some, it seems, have the notion that life belongs to those with the most or the biggest weapons.