Any neighbor worth having is already well armed.
All the rest are on their own.
JMHO.
They may be “converted” after a few neighbors are murdered by bandits. And that still leaves the widows etc. unarmed.
There are a very few whom I would trust whom, because of long past actions, society does not. In a survival situation where arming someone I would not otherwise consider giving a firearm to increases the chances of our mutual survival, it would be really nice to have that option.