Steamage: The Angel
Slavery in this Universe is actually quite common however asking for a general concensus on it’s morality is a completely different matter.
There are two questions that always are asked:
Are they captured, forced or consensual?
It is possible to voluntarily choose slavery in this world and have many different reasons for doing so; paying for work, clearing a debt or even a lifestyle choice.
Even so, some are given no choice; either due to criminal punishment, debts that can never be repaid under normal circumstances or even captured by slavers.
What conditions are set for slavery?
Again a wide range; varying from well treated considering the circumstances to downrightly bad.