Well no, mostly we don't, because the brains who happen to be the weapons still need a world to live in after they fight. The difference is that with artificial brains, hey, why would they give a crap what comes after the killing?
However, we mostly only arm brains that have an IQ of <120 and some human values baked in (e.g. empathy to other humans and living beings; a family to protect, or dependence on other social structures that demand pro-social attitudes).
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So your answer is, "Sure, let's weaponize brains, nothing can possibly go wrong"?
We already weaponize brains.
Well no, mostly we don't, because the brains who happen to be the weapons still need a world to live in after they fight. The difference is that with artificial brains, hey, why would they give a crap what comes after the killing?
However, we mostly only arm brains that have an IQ of <120 and some human values baked in (e.g. empathy to other humans and living beings; a family to protect, or dependence on other social structures that demand pro-social attitudes).