Ge 1:27 So God created man in his own image, in the image of God created he him; male and female created he them.
28 And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth,
If God's plan was "perfect", then just what did God have in mind by allowing Adam/Eve to "pro-create" until the earth was full,
If Adam/Eve had not sinned, none of those "created" would have died, and they in turn would have "Multiplied".
In the 7 thousand years the world will exist it can't produce the number of people described in the scriptures, Half of all people that ever lived are alive today. (6 Billion=12 total)
Ge 13:16 And I will make thy seed as the dust of the earth: so that if a man can number the dust of the earth, then shall thy seed also be numbered.
Ge 15:5 And he brought him forth abroad, and said, Look now toward heaven, and tell the stars, if thou be able to number them: and he said unto him, So shall thy seed be.
Ge 32:12 And thou saidst, I will surely do thee good, and make thy seed as the sand of the sea, which cannot be numbered for multitude.
Being made in "God's image", God created a "Son of God", Adam, (Man) and told him then to create more "sons of God", (multiply) however the gene pool became contaminated, so God had to create another "Son of God" to rescue the first,
But the point still remains, will the conditions on the New Earth pickup where they stopped on the old earth with sin, that is to multiply and replenish the earth, and for all eternity keep "increasing", and where no one dies, ever.
Ec 1:9 The thing that hath been, it is that which shall be;
and that which is done is that which shall be done: