Free will.
Can there be true free will without there being real choice, without the very real possibility of choosing the opposite?
In order for God to give us true free will, He also had to include the very real possibility of choice...the choice to reject Him. Since He knows the end from the beginning: He could have only created beings that would ultimately choice Him in the end, thus no one would go to hell. But would those beings truly have free will then? You might ask then: did God create evil in order to give us true choice? No, I don't believe we can say that because we have Lucifer as an example: he being an angel was also created with free will, but no one tempted him to turn away from God. He only saw good, yet he still chose to rebel against God and follow his own way. He wanted to be his own God and by doing so he divorced himself from all that is of God. We know that everything good comes from God, so Lucifer was thus left with nothing good making him evil by default. Hell is an absence of all that is of God...thus all good. Satan chose hell by default, just as every angel that rebelled and every human that rejects God does. In effect God doesn't send anyone to hell, they send themselves there. God will separate the good from the evil and enforce those boundaries. Would it be just for the good to have to live with the evil for eternity?