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How does that help? Fb will use facial recognition and track you in pictures, build up a friend-graph - and if they can - associate that profile with tracking data from "like"-buttons etc.

You can choose not to use the Internet, or only use hardened devices over tor - but it's not exactly the same as "you can choose not to drink coca cola" (incidentally, it might be difficult in places to completely avoid products by the coca cola company, as opposed to just "coke, the coca cola soft drink").

Added to this, the network effect make fb hard to avoid - people use fb/messenger for a lot of communications, volunteer groups, political groups, education... You are free to argue it's I'll advised (and I agree). But wishful thinking alone does not mean "choosing not to use Facebook", might not include: missing social, educational and work opportunities.