I read this booklet several years ago. I am interested to read it again. Because I believe it is a good start in seeking the purpose of God in creating mankind.
I believe it is good but it missed a very important truth about God, the Trinity. Because of that, Mr. Armstrong did not see the relationship within the Trinity as part of the "image of God" God had intended to do in, "Let us make human beings in our image, to be like us. " NLT
The purpose since the beginning is to create mankind with Godlike character, loving one another as the Trinity love each other.