If God knew everything before he created the earth, then why?

God knew all that would happen, child molesters, murders, drugs, and he is loving as well as all knowing. His plan? Why would he proceed with what he already knew was damned to hell, with the exception of a minority amount Christians, and only a fraction of them would make it to heaven. What is the point? Why all this big hastle and suffering? Why not truly create us in his image, knowing what he knows, then give us a free will. This would have enabled us to see as he sees and make an un-tainted choice. Instead we had free will, without full knowledge of the re-percussion of our sin. Adam and Eve supposedly operated with a full 100% of their brains capacity, yet were not fully aware of what God was saying? If they knew I doubt they would have ever ate of the tree of the knowledge of good and evil.They would have known good and evil, and not needed to eat of a tree to know it. So why all this hupla.Death of his only son etc.. I am a believer but have a little problem with this.