Edit: By metaphysical I mean concerning the nature of existence.
I suppose that could mean it is a function of atoms and molecules and energy interacting according to scientific principles . . . if there were only material existence.
And your preferring the human and rational level of material existence would be a function of atoms and molecules and energy producing you and
their preferring to function at a rational level. Yet, there are bunches, then, of atoms and molecules and energy which have developed to prefer various sorts of Christianity and to invent all which is written in the Bible . . . all starting from the evolving of atoms and molecules and energy which evolved into being able to make up that there is God, and ones of us who actually experience Him to have almighty power of peace to keep us from suffering in unforgiveness, nasty anger, impersonal drives for pleasure instead of loving, bitterness, and worry and fear. Atoms and molecules and energy . . . if there is only material existence . . . have formed themselves into ones who experience God, like this, plus into ones who claim this is creating God as an imaginary friend.
So, if secular evolution is correct, then atoms and molecules and energy have produced . . . by means of scientific interacting principles . . . experiencers of God through Jesus, plus other gangs of molecules claiming we in Jesus are . . . mistaken, to put it how certain ones put it more nicely.
And so, if there is only secular evolution with only material existence . . . atoms and molecules and energy together have the ability to form into such varying human forms. And then forms of one sort object to the forms which are different than what they themselves formed into! They have the ability to form into the different human forms, but then object to each other and have the different forms act as though they don't know what to do with what they themselves have produced.
I don't know why atoms and molecules and energy would turn themselves into such worrying and conflicting forms, when they will still be atoms and molecules and energy, even if all the humans die off and are eaten by bacterial forms of atoms and molecules and energy which will still be here.
If atoms and molecules and energy are all there is in existence, may be atoms and photons have a very high level of intelligence with ability to work with others, so they can form such human forms and our different feelings, including loneliness. May be they want to be in human forms, so they won't be lonely. But now they have produced higher forms, of loneliness, if this is the case.