1. You didn't answer the question. You said what they wouldn't be doing. What would they be doing that would be making them happier?

2. You didn't answer this question either. What specifically is stopping them from opting out? Who is putting a gun to their head and saying they can't live a hunter-gatherer lifestyle or be a subsistence farmer?

The answer is nothing. People are largely making these choices themselves, because they're better options, for reasons that are obvious to anyone who's read a bit of history.

Are you familiar at all with how China has "encouraged" people from farming communities to work in factories?

Um, the police will put a gun to your head if you're homeless. To not be homeless you can build on your land or someone else's land. If you build on someone else's land the police puts a gun to your head. To own land you need to participate in the system, and then after a whole lifetime working the cobalt mines the system might just let you get a section of property by the time you die if you're lucky.