“.. I cannot reconcile attributing morality to what they do.”
Spirited: As our souls are completely embedded within our material bodies, our “choices” are very often influenced by passions, appetites and senses. So it is not true that matter (molecules) plays no part when a man overwhelmed by hate or perhaps envy chooses to harm the object of his violent emotions.
I did not claim the matter/molecules do not play a part in the choices we are presented, merely that they do not choose what they present. The measure of morality is how we choose to respond to them.