The Catholic Church has a specific understanding of God’s plan for human sexuality. In the beginning God made man and woman, and they are meant to be complementary so as to form sexual union together. In this way, the Church takes a fairly literal understanding of Genesis – at least when it comes to the creation of man, woman, and their intended relationship together. So for the Church, the Bible lays a foundation for understanding God’s design in creating man, woman, sex, and marriage. And the Church’s entire doctrinal system and theology builds off this very basic understanding of reality. Again, God made man and woman, and God made them to complement each other and form sexual unions.
When we look around us, we can attest to the fact that this layout is generally and usually the case. There are men, and there are women, and they tend to form sexual unions with each other. However, reducing reality to this seems to cause serious problems when one starts to look around a bit more. Simply put, the Church’s umbrella of reality seems much smaller than that which actually is. For there are not only men and women who are so easily complementary to each other, sexually or what not. For there are men with exclusive same-sex attraction, and there are women with exclusive same-sex attraction. In fact, some would argue that sexuality is actually fluid. In addition, not every human person is strictly and 100% male or female: There are intersex persons, which refers to people who have male and female characteristics (XXY chromosomes or reproductive organs of one sex with external characteristics of the other sex).
This sexual diversity is either part of God’s design or it is not. When people insist that the variances are not part of God’s design – when people say that homosexual attraction or intersex persons were not originally in God’s plan – they usually mean that these circumstances exist because of a fallen world. Nevertheless, such sexual diversity is found in the physical/biological realm, so one has to question what makes these physical or biological effects natural consequences of a fallen state. On the contrary, it would be rather arbitrary to say these biological factors exist thanks to the Fall or Original Sin. If arbitrary, then these consequences are not inherent to a fallen world and therefore one would have to conclude **they are part of God’s design. **
But if such things as homosexual attraction and intersex biological factors are natural, inherent consequences of the Fall or a fallen world, then it would seem reasonable to consider such things as part of God’s plan when they would have existed in humanity all along, except for maybe the few years of Adam and Eve’s innocence.
**In summary, it seems the Church’s understanding of reality, when it comes to sexual diversity, is much smaller than that which actually exists. In addition, the common Catholic explanations for why such a great diversity exists (with regards to homosexuality, interesex characteristics, etc.), to me, seem inadequate, as they usually have to do with “consequences of the Fall”. If someone could explain how the Fall’s natural (and not arbitrary) effects/consequences include the homosexual orientation and intersex persons, then please explain. **