Many skeptics and scoffers use the slavery issue to justify their rejection of God or the Bible. After engaging with one a few years back, I finally researched the issue and found good answers that can help any Christian wanting to reconcile their faith with the slavery challenge. For skeptics though, whether it be slavery, creation vs evolution, supposed Bible contradictions, or the existence of pain and suffering in the world, I've found that providing or interpreting evidence will not sway the heart of someone not receptive to God.
Since this thread is not intended to be a defense of the Bible nor does the site allow arguing such matters, your derogatory prefaced question warrants no further response.