> why is it inherently bad if a company knows a lot about me? With enough data about you (Facebook collects more than enough) it becomes easy to manipulate you

> why is it inherently bad if a company knows a lot about me? With enough data about you (Facebook collects more than enough) it becomes easy to manipulate you (blackmail, "targeted advertising" aka propaganda, etc), and your pattern-of-life can be sold for profit. Data doesn't go away and we keep inventing more powerful analysis methods, so the risk, that collected data will be used against you only increases with time. Claiming that this risk doesn't exist or isn't likely to happen requires showing how Facebook won't lose control of the data to any future hacker, government, or buyer with a sufficiently large cash offer. Pretending otherwise is a just-world fallacy.