Is Facebook Tracking a Good Idea?

Face book is allowed to put in some text there that explains why theyd like to track you. In my opinion, there's no sentence that can fit in that box that makes a good case for tracking you. If users are ok with it, it works exactly the same as it did before. You can do all your tracking, all ad targeting and all that. Yet, i would say that on top of you have to ask every time, there is a global setting in io s where you can just say, never ask me. The answers always know.