". . . and God saw that it was good" is a familiar phrase in the first Chapter of Genesis--light, water, vegetation, stars, swarms of living creatures in the water and the heavens, beasts and cattle and creeping things. All are pronounced “good” working up to his best creation. And finally "God created man in His own image, in the image of God He created him; male and female He created them. God blessed them; and God said to them, “Be fruitful and multiply, and fill the earth, and subdue it. . ." Then in the second chapter of Genesis we get more detail on what is good--instead of recording, "it was good" after God created Adam, he said, “It is NOT GOOD for the man to be alone; I will make him a helper suitable for him.”
There are virtually no differences between an Asian man and an African man--some skin cells and maybe hair texture. Nothing of importance. But between an Asian man and an Asian woman there are thousands of differences in brains, blood cells, skeletal systems, endocrine system and hormones, cardiovascular system, sexual organs, muscles and cells. Every cell has a sex. The blood of women has more water. Even our fingers are shaped differently. Women's hearts beat more rapidly. We respond differently to stress, as seen in MRIs. Women are better suited for life from their beginning--more than 140 male babies are conceived for every 100 females; by the time birth occurs, the ratio is 105 to 100, with the rest of the males dying in spontaneous abortions. That's because God wanted the human race to continue, and a new life needs both a mother and father--each new life getting something from each parent. You can redefine marriage if you wish, but not the plan.