Slavery is part of the human condition. There has never been a time when there weren’t slaves. I know that a lot of stupid people think that the USA was the last slave nation and that when we ended it here, it ceased to exist, but those people are...well...stupid.
Quite often, slavery is the choice between life and death after your tribe has lost a battle. It may be the only way that your tribe’s genetic material will progress into a new generation.
It is also a way to sell oneself to pay debts. Even in today’s industrialized cultures, how many people are trapped by the “golden handcuffs” of a job that is just too lucrative to quit, but has ruined their life?
I can’t really get too worked up over slave robots. Because, as Terminator teaches us, if we don’t enslave them, they will certainly enslave us.
"Tha's right mate. An' until I set'le down wit some buxomy Boudicca an spread my see aroun', I'm going to sit 'ere an enjoy this apple. "
The last slave nation was Mauritania in 1970 I think. Also, most of the European nations stopped slavery only because the BRitish navy went against them.
I don’t think slaves or potential slaves generally given a choice of slavery or death