If we put what the Bible actually says together with Ellen White’s writings on the same topic it easily becomes clear why God put Adam and Eve on this planet.
The ideal EGW book, a compilation, to look at is, ‘The Truth about Angels’. The important statements that we need are within the first 50 pages.If we read this and the Bible together we will find the following series of events. After “ages” of happy existence with the angels and “other worlds” the angel Lucifer firmly decided to rebel against God. God knew this, but from this point of Lucifer’s decision onward a long time passed before it was practical for God to expose what Lucifer was up to to the rest of creation. In the meantime Lucifer was spreading his propaganda.
Eventually there was a climatic meeting before God with all the angels. This resulted in Lucifer and his angels being banned from entering God’s tabernacle. Lucifer could still go to the entrance speak out to passing holy angels.
God decided that the places left vacant by the fallen angels must be refilled. To do this God put two people made in His image on this planet. He told them the fill the earth with people. All these people would be at first a little lower than the angels (Ps 8:5), but when ready they would all be made equal to the angels (Luke 20:36), Once this is done all of this earth’s sinless inhabitants would be taken to God’s Tabernacle to fill in the vacancies there.
This plan was severely disrupted by the fall of Adam and Eve. However, it will still be accomplished in difficult circumstances such as what we have been experiencing for the past 6000 years. Please note that if Adam had stayed true to the truth, only Eve would have been affected. Jesus still would have come to die in order to save her and bring her back to Adam in order to resume their original purpose.
This context is why we have male and female. The two would work together to bring up a group of people who will go to God’s Tabernacle.
No prizes for guessing how Satan and his angels feel about all this. No prizes for guessing how Satan has been trying to prevent human reproduction and to destroy those who do get born.
Another purpose had in the original Genesis creation plan was to show to the universe a working model of the relationship between God and His creation. We see this in the relationship between the male and the female and the family and between the mother and her child. Neither the male nor the mother are God, they simply help everyone see things from God’s viewpoint. Obviously the sin event greatly confused things, but if we can keep in mind the above overview of creation we will be able to sort out the various issues.
So you see that the woman is actually the most important person as she is the one that actually gives birth to children, who also go on to have children. In the sin situation God had to adapt the circumstances so that the original purpose keeps operating and then to also save everyone from death. An additional circumstance is that there is Satan and his angels continuously trying to destroy everyone.
Jesus said that after He comes there will be no more marriages. He only wanted enough people to replace the fallen angels, not to breed forever. Whether sexual differences will disappear at this time and we all look the same or not we can only speculate, but it would seem logical.