@Incubae "Slavery isn't evil" isn't wrong as a opinion though. Think about it this way if you're a poor village girl/boy let's say the third child or something and the poor family you have can't afford to feed you, your sometimes better off becoming a slave turned helper somewhere then staying in that poor family only to get either killed in difficult times,Sold as h-oe or outright die of starvation when they're low on food. Yes there's a possibility of poor to horrible treatment for slaves if they end up with cr@ppy owners but there's a equal possibility of getting a normal or nice person as a owner who just needs extra help so yes "Slavery isn't evil" "people are evil" and in Weiss world slavery is treated as a normal work/labor system in society so it's up to the people to decide if it's evil or not by the results of the owners actions basically. I don't support slavery but you can't say a "Tool or system" is inherently evil just because most of what you see/heard about it is only the Dark sides as those tend to be the most spoken about parts and the small good it does didn't get talked about.
*sips tea while watching* Im just here to watch the Chaos unfold - my pfp sauce is Yuki from "Nekomusume Shoukougun" here I'll share some good books https://mangabuddy.com/manga-list/125599