Some bright kids at the age of around three years would ask their mother, “Mamma, where did I come from? Who am I?”
Most of them would accept the "Stork theory" although they may not quite fully believe it and possibly keep the idea in their mind for verifying later on as they grow up..
And today as adults, all of us too could pose the same question, “Why did God create me and the millions of human beings (both men and women) to dwell on the Earth?”
God did not tell the world why He brought to life the first man and woman and put them in garden of Eden and in course of time to multiply. Perhaps He wanted us to find out "why". Nor does the Bible give any idea about it.[Incidentally, the Holy Bible is the only religious Book that talks about the origin of Earth and Human beings and no other of any religion. True, Quran also does. But it came centuries later and one could notice its similarity with the Bible !].
It's a fact that the Bible is not a book from A to Z. Many things and truths have been quoted out of sequence. It is only by studying and connecting up various references that one could one form a picture on any event. Even here, you may have to apply your logic and interpret it according to your understanding. Here is my interpretation of the purpose behind the Creation..
Before the Earth came into being, there was Heaven. Heaven is God's abode - the Creator God's. Did it or does it have any other persons besides God? Yes, indeed. Heaven is inhabited by angels. God could produce an angel just by word of mouth and they come to life as "adults" straightway. There is nothing known as ";baby angels, "boy angels' "adult angels, "aged angels' etc.' They don't grow like us. They remain the same for ever. Angels are eternal and holy ; once produced, they don't die. Their body chemistry could be something unique. Probably there is no blood circulation in it. They may not require regular food to survive. They may assume any body shape and possibly sex and appear and disappear at any place instantly.
They are a work force to carry out any given task and their regular job is to worship the Creator God and keep on worshipping Him day in and day out. What is the population of Angels in Heaven? No precise idea. But there could be millions and millions. Is it possible that since they didn't have any work to do God perhaps wanted to give them some kind of job to keep them occupied besides worshipping Him ?
It was at this point of thinking that God-Head decided to create another being called “Human beings”. They will be born as small babies in a woman's womb, grow up gradually and become full adults say about 18 years. Their body design would be quite different from Angels' although their body shape and outward appearance may be close to that of the Angels.
God wanted the human beings to live elsewhere, lead a nice life, enjoy everything He would provide for them and at a certain point of time of their life, they should leave their place of birth and come to Him with a different kind of body and to live eternally with Him alongside the Angels. It was God's idea that the human beings in Heaven would be slightly superior to the Angels. Their job in Heaven would be primarily to worship God.
At that time, the planet Earth was without form and shape. God shaped it and divided the Earth into water and dry land. God would put on the Earth everything the future human beings would need, like various types of vegetation, cereals, pulses, animals, fish, birds primarily for food. As regards the other requirements, God expected them to work them out by themselves. [If you think deeply, you would come to the conclusion that everything we have as of now like our clothes, cars, cycles, electricity, aeroplanes, books, newspapers, gold, silver and other metals, fuels and all kinds of machinery in the industries etc, have been fabricated and produced from the raw materials found inside the Earth? It is the human ingenuity that did all these]
Towards that, He would give them a good thinking brain which would reason out every thing and at every step, work out the various processes and direct them to the right product.
Possibly, the Angels do not possess this faculty; they probably are not self thinking people at all; they only know how to obey orders.
God must have been highly fascinated with these design parameters of the proposed human beings and their physical needs. All at once He developed a sudden preference and love for them. A love slightly greater than that He had for his Angels.