Slavery sucks, yes, but sooner or later even our kids might be subject to slavery. Everything unfolds for the greater good, so even the black people who were slaves, yes, that sucked for them in the past, but now a majority of them have come to knowing Christ, so their souls have been saved for eternity. Many of the people in Africa don't know Christ at all, so even though they were not slaves, they haven't come to know the true God. I think it is better to endure slavery them have your children return to God, then to never endure slavery and the souls of your entire bloodline will never know God, truth, or heaven. Without truth there is no freedom.