I know my comment will get downvoted. But there's a lot of misconception about Facebook, and the other counter-arguments are worth mentioning too. Facebook does not sell our data, in fact, they keep it very secure. Facebook merely allows advertisers to target you based on your interests (which it learns from your activities). Advertisers cannot identify anyone, they just select categories for which they want their ad…
You are wrong because you are focused on FB abalone and ignoring the system. You are wrong because you are focused on what FB exports and ignoring what they import. You are wrong because you are focused on the present and ignoring the past history of abuses.