Max Stirner argued that God is an egoist and so should man. Though I don't often agree with Stirner's philosophy it seemed relevant to your questions:
"You have much profound information to give about God, and have for thousands of years “searched the depths of the Godhead,” and looked into its heart, so that you can doubtless tell us how God himself attends to “God’s cause,” which we are called to serve. And you do not conceal the Lord’s doings, either. Now, what is his cause? Has he, as is demanded of us, made an alien cause, the cause of truth or love, his own? You are shocked by this misunderstanding, and you instruct us that God’s cause is indeed the cause of truth and love, but that this cause cannot be called alien to him, because God is himself truth and love; you are shocked by the assumption that God could be like us poor worms in furthering an alien cause as his own. “Should God take up the cause of truth if he were not himself truth?” He cares only for his cause, but, because he is all in all, therefore all is his cause! But we, we are not all in all, and our cause is altogether little and contemptible; therefore we must “serve a higher cause.” — Now it is clear, God cares only for what is his, busies himself only with himself, thinks only of himself, and has only himself before his eyes; woe to all that is not well-pleasing to him. He serves no higher person, and satisfies only himself. His cause is — a purely egoistic cause.
God and mankind have concerned themselves for nothing, for nothing but themselves. Let me then likewise concern myself for myself, who am equally with God the nothing of all others, who am my all, who am the only one.[Der Einzige]
If God, if mankind, as you affirm, have substance enough in themselves to be all in all to themselves, then I feel that I shall still less lack that, and that I shall have no complaint to make of my “emptiness.” I am not nothing in the sense of emptiness, but I am the creative nothing, the nothing out of which I myself as creator create everything.
Away, then, with every concern that is not altogether my concern! You think at least the “good cause” must be my concern? What’s good, what’s bad? Why, I myself am my concern, and I am neither good nor bad. Neither has meaning for me.
The divine is God’s concern; the human, man’s. My concern is neither the divine nor the human, not the true, good, just, free, etc., but solely what is mine, and it is not a general one, but is — unique,[Einzig] as I am unique."