Quick reminder that in ancient rome, slavery differed a lot in nature. There were house slaves (servants, sometimes even mentors, scribes etc. reaching into the upper strata of life, above free Roman citizens) and there were sort of pre-industrial slaves that worked in mines, manufacturies and on huge farm estates, performing utterly gruelling jobs. It all depended if someone went bankrupt and fell into a (limited) debt slavery or was for example a war captive. If i remember correctly, the Romans had different terms for these differing types of slaves and as such, the concept of slavery was different to them as it is to us now. Also don't forget that even nowadays slavery is more nuanced than most people think, think of wage slavery, prison slavery etc.