C.S. Lewis provides a great explanation to the accusation that God’s love must be selfish if God seeks it for His own glory when Lewis says,
What is called selfish love among men is lacking with God. He has no natural necessities, no passion, to compete with His wish for the beloved’s welfare. . . . A man can no more diminish God’s glory by refusing to worship Him than a lunatic can put out the sun by scribbling the word ‘darkness’ on the walls of his cell. But God wills our good, and our good is to love Him.
Lewis’ point is not that God needs our worship, but that God’s desire in making us is for worship.
God of mere miracle has made Himself able so to hunger and created in Himself that which we can satisfy. If He requires us, the requirement is of His own choosing.