Re: you won't defeat the object
Facebook don't have any details about me which are not publicly available elsewhere, and there are very few evil things they can do with photos of my evening meal anyway
Well, but that's your CHOICE. Most people are deceived into giving permission, and once they have it, the poor user gets to play a game of whack-a-mole if they ever want to turn back the clock. There is also the fact that, given enough data, you can prove anything by selectively choosing your framing (a pretty standard government and sales trick to massage statistics) - I hope you will never get into the position where someone needs leverage on you because you'll come to regret your "nothing to hide" life then.