So perhaps you'd like your neighbor to acquire a nuke or smallpox-based vaccine. Sure, he's a great guy and will never use these things, and besides, nukes have plenty of other purposes in a household. Their primary reason is totally not for killing people, so this is all good, right?
>>IgorPa+(OP)
Let's not resort to reductio ad absurdum arguments, please. There's plenty of rationale arguments that you could have made instead. No one's suggesting that people should be allowed to keep nuclear bombs in their homes, and your metaphor is untenable.