TGGP, if the mind were not embodied in the brain, it would be embodied in something else. You don't need neuroscience to see the problem with the naive conception of free will.

The reason I don't think idiots deserve to die is not because their genes played a role in making them idiots. Suppose it were not the genes. So what? The point is that being stupid is not the same as being malicious, or dishonest. It is simply being stupid, no more and no less. Drinking Sulfuric Acid Drink because you wishfully think it will cure your arthritis, is simply not on a moral par with deliberately burning out someone's eyes with hot pokers. No matter what you believe about the moral implications of determinism for sadistic torturers, in no fair universe would mere sloppy thinking be a capital crime. As it has always been, in this our real world.