The creator gave a woman a uterus and let her bear the pain of childbirth alone. Why?

Obviously, this is evolutionary selection. The asexual species that still exist today are basically the lowest-level organisms, because asexual species directly copy their genetic information to future generations and cannot evolve, so they can only maintain the lowest life form. Moreover, because asexual reproduction is difficult to adapt to environmental changes, most asexual reproduction species have become extinct. A complex species like human beings cannot evolve asexual reproduction at all. Even if mankind suddenly turns to asexual reproduction today, it will certainly become extinct. The process of evolution must be sexual reproduction, because sexual reproduction can ensure the safety of genetic information and the diversity of offspring. But sexual reproduction has hermaphroditism and hermaphroditism. Then talk about the androgyny phenomenon that actually exists in nature: androgyny is very common in plants, but rarely in animals. Most plants can't move freely and can only be pollinated by wind or insects. They may exchange limited genetic information, so hermaphroditism is of little significance (but there are also many hermaphroditism plants). Therefore, plants realize the diversity of offspring through different multi-offspring. Plants will produce a large number of flower buds in a season, and the genetic information carried by pistils in each flower bud is slightly different, but there is no difference in stamens, so there will be subtle differences in future generations. In order to realize the evolution adapting to environmental changes in this way, it is necessary to ensure that there are enough descendants to make sense. There are few hermaphrodites, mainly some fish and gastropods. Some hermaphroditic fish will show male characteristics during the non-breeding period. During the breeding period, they gather in a water area and disperse their sperm in the water. Then some male characteristics disappear and female characteristics appear, and the eggs are also discharged into the water to complete the fertilization process in the water. Our common hermaphroditic animals are snails and earthworms. A snail has both female and male characteristics, but many snails will still mate during the breeding period. During mating, a snail shoots sperm at another snail, and the other snail also presents sperm to this snail. Finally, both snails gave birth to new life.