Slavery is not a trade you choose to have practiced on you, it is a trade you choose to practice.
And as a slave, you always have a choice. It's not cost effective to monitor and restrain you well enough to keep you from killing yourself indefinitely. Lacking others, plenty of slaves have chosen and do choose this option. Same as if all physical work turns into piece/gig-work. You can choose to do it, or you can choose to starve.
> as a gig or piece worker, you can choose to do something else
Not if every other job is gig and piecework.
> Do you feel kind of dirty suggesting that a slave can just choose to kill himself and comparing that to Barcelona cab drivers? If you don't, why not?
No, because choice is a word that means something. You're doing the common rationalization that there are always choices in employment, so while any particular employment can be arbitrarily bad, it's not slavery. I'm pointing out that slaves also have bad choices.
I mean, among other things, Spain has a social safety net for people who don't work at all.
There are obviously shitty jobs in the world. There are obviously people whose choices do not include, you know, the ideal of material well-being plus fulfilling days. It is certainly a defensible position that the world owes it to people in that position to try to make their choices better.
Conflating those things to slavery makes you fundamentally an unserious person.
And as a slave, you always have a choice. It's not cost effective to monitor and restrain you well enough to keep you from killing yourself indefinitely. Lacking others, plenty of slaves have chosen and do choose this option. Same as if all physical work turns into piece/gig-work. You can choose to do it, or you can choose to starve.