You're taking it far too literal.

I'm aware of parents who have 6 year olds and 10 year olds using Facebook so that they have access to games and family. The Facebook UI/UX does do nasty tricks to coerce people into providing more information than they prefer.

Did you know that other users can volunteer your information? Someone else can register themselves as your family member, close friend, or classmate at a specific institution, without your consent. They can volunteer your location (city) as well. This was not possible in the past, before the "smart lists" feature. They're literally getting people to fill in the information of friends so that they can be targeted ads even if they chose not to provide that information to facebook. I don't think many people know this.