Gosh, it would be nice if we could go
one single day on TSR without someone apologising for, excusing and justifying the evils of slavery, and pretending that Islamic slavery isn't as vile and inhuman as the rest.
Do you actually believe this nonsense you've typed? If so, I pity you. You take
me as a slave and rape me after my tribe have lost a war against your vicious slave-trading mob, mate, I'll stab you and your family to death in your sleep. Not going to look like such a clever idea to keep slaves then, is it?
As for your question
I don't think anyone here or elsewhere has ever claimed that our society's morality is 'absolutely correct', so I don't know why you've dragged that in. However, I for one certainly vastly prefer what we have now to the savage barbarism of 7th-century Arabia, or what some people like to pretend is perfect, objective, divine morality. I'd rather not have to pretend that slavery is just awesome, that people who have sex with the same gender deserve to be thrown off buildings and that I deserve to be stoned to death for having sex with my boyfriends, ta very much. This to me is clearly immoral, insane and disgusting. As for you, how do
you know that your beliefs are correct and moral? Because you've convinced yourself that some 7th-century hate manual is the word of god?