“There are only two kinds of people in the end: those who say to God, "Thy will be done," and those to whom God says, in the end, "Thy will be done." All that are in Hell, choose it. Without that self-choice there could be no Hell. No soul that seriously and constantly desires joy will ever miss it. Those who seek find. Those who knock it is opened.
C.S. Lewis, The Great Divorce
Yup. I think Lewis really hit the nail on the head. God created Hell out of Love. God has such love — even for people who reject Him — that He made a place where people can go where He is not. It’s exactly what they want, so God provides it. Because He loves us.