Even the most ruthless dictator must respond sympathetically to his subject's needsthat is, if he wishes to stay in power. Just because God benefits from the world does not mean God can or should exploit it for egotistic ends. As both creator and component of the universe, God cannot be happy or whole unless we humans are. If God is love, then the greatest divine need must be for a world. A solitary lover is a contradiction of terms.
Love is always acquisitive in the sense of requiring an object.
One could argue that God merely wants a world but does not need it. One could further argue that creation is located in the divine will but not in divine being. This line of reasoning falls apart under closer scrutiny. The notion that God merely wants but does not need a world implies that divinity is a house divided unto itself, or two mutually exclusive entities, only one of which is clamoring for a world. The argument that creation may affect the inner being of God but not in a way that alters any divine perfections is similarly flawed.