[tuesdayrain]

I don't think "because there's legitimate uses" is the differentiating factor, since that implies only kitchen knives have them. Self-defense is a legitimate use for owning a gun, for example.

[marcinzm]

In many countries self-defense is NOT a legitimate use for owning a gun.

[kevin_thibedeau]

Many of these countries have exterminated their large predatory animals.