Of course He doesn’t!
Catholic Dogma is absolutely clear. God is infinitely perfect in himself, infinitely happy in himself, infinitely simple. God therefore needs nothing whatsoever. He is the source of all things else. He is the absolutely gratuitous source of all things else. Creation is an absolutely free act.
This means that creation need not have occurred, and God would be the same God he is “now.” The “now” is said from our perspective, for God is simply God. The “now” of God is just this: GOD. There is no “now” that measures him, unlike our own “now.” There is a “now” that measures us. God is his own measure, which means he remains unmeasured.
It is heresy to state that God created anything at all out of a need. Out of necessity. Out of any necessity whatsoever. Vatican I declares “IF ANYONE … HOLDS THAT GOD DID NOT CREATE BY HIS WILL FREE FROM ALL NECESSITY BUT AS NECESSARILY AS HE NECESSARILY LOVES HIMSELF, … LET HIM BE ANATHEMA” (DEI FILIUS, CANON 5 OF CHAP. 1).
Excluded here is any kind of necessity whatsoever. God does not need us in order to gain happiness. God does not need us just because he is God: That is, he is not a kind of naturally self-diffusing good that simply must create, just like the sun simply must radiate light.
If God created all things without any need or necessity whatsoever, then he needs not one of them. Now, man is a created thing. Thus, God does not need man. He remains God, whether or not man continues to exist. This is the constant Tradition of the Church. This is the Formal Teaching of the Infallible Magisterium, to which all Catholics are forever bound. This is Truth.
Does this truth denigrate God’s love for us? Does it denigrate us? Absolutely not!
First, a lie denigrates us. A truth builds us up. If you tell me I am a great windsurfer, you denigrate me, because it is a lie. We know that the person who tells false things about our greatness flatters us. We know that who flatters us is not offering us true love; however noble his intentions, he is quite misled. I want to be lifted up by Truth. By God.
Second, only if I get God right can I get myself fully right. If I have a false conception of God, I will have a false conception of myself. But to say that God needs anything is to make God a creature, a fellow finite being struggling to make ends meet. If I do this, then how can I rely on this weak and pathetic god? Sure, I might confide in him and have a beer with him. But can I trust him with my all? Can I count on him being omnipotent? Able to overcome all things? No I can’t. Thus, if I think God needs me, I no longer can count on him. But I know my weakness. I know I need him. That is why I reject every claim that God needs me. Such claims are poison.
Third, to get it right that God does not need me makes his love all the more surprising and exhilarating. He does not need me, but he calls me into being. He does not need me, even now, but he sustains me. He woos me from my laziness and apathy. He redeems me from my sinfulness. He heals me from self-inflicted wounds. He kisses my sinful heart, to make it new. He touches my eyes, which have darkened themselves, to make them see. He strengthens my faltering limbs. He builds me up. He calls me home. Without any need. Steady love, totally for me. Why, O Lord, do you look on mortal man? A worm and no man? I thank you. Help me to receive your gifts well.
Conquer your enemies with your Truth, converting their minds and their hearts. And, lest they be found to poison the wells of your saving waters, remove the rebels from your holy house.