The funny thing is being enslaved by the religious zealots is one of the best starts you can pick in the game. You're stuck in a quarry doing backbreaking work (which levels strength), are fed just enough that you won't die (acquiring food is normally a nightmare in the early game), and most importantly the guards won't (intentionally) kill you, only knock you unconscious if you misbehave. Which matters because taking damage is how you train toughness, making it one of only a few places on the entire world map where you can train it without a high risk of death.

And it gets better. Every night after your shift you can sneak out and practice lock picking on doors and slave shackles and assassinating sleeping guards (since failure only results in a beatdown), which combined with the strength and toughness grinding leads to you becoming a ninja powerhouse by the time you escape.

10/10, would lead a slave uprising again.