Why should we praise and thank God, since God needs nothing from us? But need is not the point. Love is. God mad the world from nothing, needing nothing from the world, and our response to this grace is grateful praise—the response of a loving heart to the God who loves. We are most like God the Creator when we praise and thank Him, because then we enter most closely into the freedom of giving, and “the glorious liberty of the children of God” (Rom 8:21). That is the way to understand heaven. It is not the place where God grants our desires, whatever those may happen to be. It is the place where our desire for God is granted, a desire inherent in our beings as creatures capable of intellect and love. It is a place of reveling in the glory of God.
—from the book Real Music: A Guide to the Timeless Hymns of the Church (book and CD) by Anthony Esolen, Ch. 12: The Glory of God