What is the Goal of the Catholic Church?

Why did Christ establish one, holy, catholic, and apostolic Church?
Why did the eternal Son of God become incarnate of the Virgin Mary, call the Twelve, establish them on the rock that is Peter, give them the power to proclaim his Kingdom and even to absolve sins, and empower them with the Holy Spirit to lead them into all truth? In other words, why did Jesus ascend into the heavens and leave his Church to finish the mission?
What’s God’s Goal?
To answer these questions, it can help to ask another question: What does God love most? What is God’s goal? Because God’s existence does not depend on anything outside of himself there can be only one answer. God’s goal is God. God loves God most. Does this make God an egocentric narcissist who is ultimately incapable of love? Not at all. God is not “self-centered” in human terms; God is God-centered in God terms, and “God is love” (1 John 4:8). God’s very being is an eternal exchange of love—Father loving Son, Son loving Father, in the binding love of the Holy Spirit.
God’s ultimate goal is to glorify God and to enjoy God forever. To borrow from Ignatius of Loyola, everything God does is “for the greater glory of God.” The Persons of the most adorable Trinity—Father, Son, and Holy Spirit—are eternally and passionately in love with one another. God’s love for us is grounded in God’s love for himself, and this makes his love for us so divine.
What is the best gift God can give you? Ultimately, the best gift God can give you is himself. “God so loved the world that he gave his only Son” (John 3:16). We were made for God. “God has made us for himself,” says St. Augustine, “and our hearts are restless until they