In chapter 6, what does it mean when Ishmael states "You're captives of a civilization system that more or less compels you to go on destroying the world in order to live".

This is a pretty famous quote. It talks about humans, although free to make choices, are resigned to be captives in society. We are complacent while we destroy the world reproducing and using up the words resources in the name of progress. That's my take.