Man and woman have been created, which is to say, willed by God: on the one hand, in perfect equality as human persons; on the other, in their respective beings as man and woman. "Being man" or "being woman" is a reality which is good and willed by God: man and woman possess an inalienable dignity which comes to them immediately from God their Creator.240 Man and woman are both with one and the same dignity "in the image of God". In their "being-man" and "being-woman", they reflect the Creator's wisdom and goodness.In no way is God in man's image. He is neither man nor woman. God is pure spirit in which there is no place for the difference between the sexes. But the respective "perfections" of man and woman reflect something of the infinite perfection of God: those of a mother and those of a father and husband.241"Each for the other" — "A unity in two"
God created man and woman together and willed each for the other. The Word of God gives us to understand this through various features of the sacred text. "It is not good that the man should be alone. I will make him a helper fit for him."242 None of the animals can be man's partner.243 The woman God "fashions" from the man's rib and brings to him elicits on the man's part a cry of wonder, an exclamation of love and communion: "This at last is bone of my bones and flesh of my flesh."244 Man discovers woman as another "I", sharing the same humanity.
The Catechism really says it better than I can, that men and women are equal in dignity before the Lord, but we are different. We are physically and emotionally different. Wired differently, you might say. God in His wisdom knows that to be helpmates to one another, we cannot be just alike. Although you'd think sometimes that would make life together so much easier, it wouldn't make life better.