I do not believe that God uses people in any sense that would make God a user. The free will aspect of our nature, perhaps part of the image and likeness that we all share, precludes such a conclusion.
Genesis 1:26-31
Then God said, ‘Let us make humankind in our image, according to our likeness; and let them have dominion over the fish of the sea, and over the birds of the air, and the cattle, and all the wild animals of the earth, and over every creeping thing that creeps upon the earth.’
So God created humankind in his image,
in the image of God, he created them;
male and female, he created them.
God blessed them, and God said to them, ‘Be fruitful and multiply, and fill the earth and subdue it; and have dominion over the fish of the sea and over the birds of the air and over every living thing that moves upon the earth.’ God said, ‘See, I have given you every plant yielding seed that is upon the face of all the earth, and every tree with seed in its fruit; you shall have them for food. And to every beast of the earth, and every bird of the air, and to everything that creeps on the earth, everything that has the breath of life, I have given every green plant for food.’ And it was so. God saw everything that he had made, and indeed, it was very good. And there was evening and there was morning, the sixth day.
Genesis 2:15
The Lord God took the man and put him in the garden of Eden to till it and keep it.
Job 38:4-7
‘Where were you when I laid the foundation of the earth? Tell me, if you have understanding.
Who determined its measurements—surely you know! Or who stretched the line upon it?
On what were its bases sunk, or who laid its cornerstone
when the morning stars sang together and all the heavenly beings shouted for joy?
Psalm 8
O Lord, our Sovereign,
how majestic is your name in all the earth!
You have set your glory above the heavens.
Out of the mouths of babes and infants
you have founded a bulwark because of your foes,
to silence the enemy and the avenger.
When I look at your heavens, the work of your fingers,
the moon and the stars that you have established;
what are human beings that you are mindful of them,
mortals that you care for them?
Yet you have made them a little lower than God,
and crowned them with glory and honour.
You have given them dominion over the works of your hands;
you have put all things under their feet,
all sheep and oxen,
and also the beasts of the field,
the birds of the air, and the fish of the sea,
whatever passes along the paths of the seas.
O Lord, our Sovereign,
how majestic is your name in all the earth!
Perhaps the question should be more about the purpose and destiny of humankind.