They wouldn't necessarily. The better question is: Why would Facebook's Users know better what they, as individual human beings, want, rather than whoever is in

They wouldn't necessarily. The better question is: Why would Facebook's Users know better what they, as individual human beings, want, rather than whoever is in charge of the society, including their meddlesome neighbors, self-aggrandizing politicians, and repressive religious leaders? (n.b. there are real meaningful answers to this question which respect individual agency instead of simply collectivizing all decisions about who is allowed to send bits to whom; it's just much more work to nail them down.)