The argument that you only use Facebook to keep in touch with your family and friends is a bullshit one. It's the same piss poor argument that you make by stating that you only read The Sun or Daily Record for the sports pages and TV listings - yet still you end up adopting the same skewed moral arguments that the newspaper presents to you. Somehow, their agenda has infected your weak and tragic little mind.
Wake up people! Delete your Facebook account. You are being psychologically profiled and socially engineered. The days of an open, free, progressive internet are over unless you learn how to use it and manipulate it properly. As Douglas Rushkoff would put it: "Program Or Be Programmed". This 10 minute presentation by Alexander Nix at the 2016 Concordia Summit demonstrates exactly why Rushkoff is entirely correct.