@Aricitic I mean, it just feels like you're literally making the same arguments slaveholders in America made before the civil war. We're 'taking care of them cause they can't care for themselves.' Your points about food and limited resources don't really apply in today's world, as it's not a matter of us not having enough food, it's that we could feed everyone, we just choose not to, as it's very costly to distribute the food, especially to the places that need it and can't afford it. Also we have this notion that if you can't afford food you don't deserve it (the literal commodification of sustenance).
Also, where do slaves come from, anyway? In most instances, there were people doing just fine, before another, more powerful group came along and conquered and enslaved them. This is not a 'would you rather' choice, but a 'hey, maybe if you didn't conquer other nations there wouldn't be slaves, yo.' The initial action was bad, the slavery is worse. We're talking slaves here, not feudal serfs.
And there is still modern day human trafficking, even here in the states.
@Tamerlane So, if I understand what you're saying, most societies were built on slavery/forced labor? Alright, I guess I can't argue with that. I still wouldn't classify it as a 'good' thing necessarily, though. I know this is from a modern day, American perspective, but I have a rather absolutist view of the subject. Whether or not society as a whole benefits from slavery, the taking and owning of other human beings is still morally wrong.
And yet we still do it.