When studying the Problem of Evil and Suffering, I find that most, if not all, of the problems hinges on the premise that God knew in advance that we will freely decide the sin. "If He knew in advance that we will commit evil by our free-will, then why did He allow free will, in the first place?" We may say that free-will has much value in that we cannot genuinely love if we don't have the option to choose not to love. We may say that God desires a world of people who have a genuine relationship with Him, not a world of robots. However, I don't see how that proves that a free world with evil in it is better than a robotic world with no evil in it. Also, I don't see how God can't make this world such that we have free will to do relatively minor sins like cursing, but not very devastating sins like murder. Isn't it theoretically possible to have free will without the option to kill or do other very horrible acts (just as we don't have the option to fly like the angels, yet still have free-will)?