You’re not paying Facebook for their service, so they’ve got virtually no incentive to create the best experience for you to stay in touch with your ‘friends’. It’s just a means to an end for them, anything barely adequate will suffice. Their real incentives lie with providing advertisers with as much of your info as possible, so that they can drill down and target you with their god awful ads, in an attempt to maximise their click through rate. That goal takes priority over everything else, even that pesky privacy stuff. There’s no such thing as a free lunch. This should not be surprising.
— Facebook vs. Facebook Users by Layton