The goal of creation is—to please the creation, i.e. the Creator wants to fill us with the very best. And until a man receives all the very perfect and the very best that has been ordained for him by the Creator, he experiences the lack of everything, and this is the sign that he hasn’t yet reached the goal of the creation.

Creation is designed in such a way that it is oriented to worship. It fulfills its purpose and assumes its significance when it is lived, ever new, with a view to worship. Creation exists for the sake of worship. As Saint Benedict said in his Rule: Operi Dei nihil praeponatur

Love is the purpose of creation of this world. Without love politics would not have a meaning. Life would not have a meaning either. God created the purpose of this world as love. God says; “Love Me and I will love you.” The whole system is based on that. Without love nothing has any meaning.

Theologically, man is to be understood as the final purpose of the creation; placed on the globe as the masterpiece of the works of Omnipotence, contemplating the world by virtue of sapient reason, forming conclusions by means of his senses, it is in His works that man recognizes the almighty Creator, the all-knowing, immeasurable and eternal God, learning to live morally under His rule, convinced of the complete justice of His Nemesis.

The aim of the Creator from the time He created His Creation is to reveal His Godliness to others.

God’s purpose of creating human beings is so that we can live loving God as our bridegroom, our lover.

Man is created for a purpose; the object of his existence is to perfect himself. Man is imperfect by nature, because if nature had made him perfect he would have had no wants; and it is only by supplying his wants that utility can be developed. The development of utility is therefore the object of our being, and the attainment of this great end the cause of our existence.

Creation means discovery of a new reality that exists but that has not yet been noticed. The word is alive again. The speaking word. The verbs are in revolt—a revolt of the masses against the representation that has always been the main weapon of the state. (p.121)

It's all for him.
The ultimate goal of the universe is to show the glory of God. It is the reason for everything that exists, including you. God made it all for his glory. Without God's glory, there would be nothing.

It is right that creation should exist as he has made it and as we see it happening, because this is his will, which no one would deny. For if the movement of the universe were irrational, and the world rolled on in random fashion, one would be justified in disbelieving what we say. But if the world is founded on reason, wisdom and science, and is filled with orderly beauty, then it must owe its origin and order to none other than the Word of God.

The primary purpose of existence is that God wants you to achieve something for him.

God did not create the world in order to get anything for himself. In fact, there is no need of God’s that we can supply, no luxury of His that we can provide. Actually, God created the world in order to bestow his blessings on his creatures and to give them a share in his own goodness.

The Bible talks of purposeful creation. What we have, however, is an amazing amount of order; and when we see order, in our experience it normally reflects purpose.

Where there is Isness, there God is. Creation is the giving of isness from God. And that is why God becomes where any creature expresses God.