Science states that mater cannot be created or destroyed, only change form.
That all mater is made of energy and that energy cannot be created or destroyed, only change form.
I say that consciousness is the highest form of energy and that consciousness cannot be created or destroyed, only change form.
So that all consciousness is a piece of God and thus eternal.
Jesus said: "That which you do to the least among you, you do to God".
Thus, every experience by a conscious being is experienced by God and is eternal.
So that inflicting suffering and pain and death to another being regardless of the form that conscious being is using to experience this reality is felt by God and becomes an eternal memory by God and that being.
So since we are all a part of God consciousness and eternal, anything we do to another being, we do to ourselves.
So, it does matter if another being, regardless of its form, suffers and dies, because it become the memory of the experience of life's existence.......which is God.