Emotional appeals and argument mean nothing to natural selection.
Darwin lamented and praised the indifference of Nature.  And yet, Darwin also wrote that Nature selects for the good of each being that she tends.  It is a strange attentiveness, or a strange indifference.

This paradox of Nature is the same as the divine paradox.  We petition God.  Scriptures, traditions and many who confess faith today tell us God is moved by our feelings and arguments.  And yet, in the end (as at death) we know, or we discover, that God is not moved by our pleas for life, nor by our best bargains.  The way of life and death is fixed; it is part of the impervious order that is the cosmos.  It is fixed, unless it is changed in eternity, in another life.

Whether born of Nature, or God, or both, we are, ourselves, impervious.  Perhaps it is a mercy given by a strange attentiveness.  It is a kind of immunity, even though it is only partial.

In No Place for You, My Love, Eudora Welty described the dance between a man and a woman as “imperviousness in motion.”  She wrote, “Surely even those immune from the world, for the time being, need the touch of one another, or all is lost….They were what their separate hearts desired that day, for themselves and each other.”