Additional levels of automated stalking!!!
Don't you understand? People who sign up for Facebook *WANT* these things - their pathetic lives would be even less without their "friends". Without Facebook, many people have NOTHING!
Your "Troll" mod was not because you said anything inaccurate. It is because we live in an increasingly emotionally immature society where the pleasantness of a thing is considered more important than the truth of a thing. It is the result of being governed by emotion and not reason. Whoever modded you "Troll" is like that. Sadly, many people are unable to calmly articulate their own opinion, so they need to "get back at you" in some way for offending them. After all, you didn't constantly say things like "well just my opinion" (something already understood) and "hope it doesn't offend anyone" (that is their choice) to kiss their asses and placate their desire to climb up on their high horse and cry about how terrible you are. Their self-importance and false sense of entitlement demand that you show such undue deference, you know.
Anyway, when you have real friends whom you love and respect like family members, and a satisfying social life, Facebook has no appeal. All Facebook offers that cannot easily be had elsewhere is the exchange of trivia with and casual attention from strangers or superficial acquaintences. The trade-off of losing so much irretrievable privacy in exchange for something so devoid of real value makes no sense. To those who are not starved for attention, it is all minuses and no plusses. The bandwagon it has become is also unappealing to those who are not herd animals, who don't find "everyone else is doing it" to be a valid reason to do anything.
I can certainly see how those who otherwise would have no satisfying social life might find it appealing. This merely constitues Facebook taking advantage of a weakness/shortcoming and exploiting it in order to make money. The disrespect they frequently show to their userbase and the obvious disregard of basic privacy concerns makes it inherently exploitative in nature. It's something that a healthy, happy person who is not needy would refuse to tolerate. Zuckerberg's contempt for his own users has been repeatedly established by his very own statements. This is someone people want to trust with so much personal data? It's absurd and indicates that many people have no idea whom they're dealing with, or simply no real discerning standards for themselves.
If someone has to data-mine and connect lots of different dots and perform all kinds of automated searches in order to find you, it is because you didn't want to be found. That's why such vast systems and huge databases were necessary to do something that is otherwise so simple. If you want someone to be involved in your life in some way, none of that would be needed.
I do agree with your premise that for people who have little else, this kind of attention may actually be welcome. Of course that is pathological, used as a terrible substitute for real fulfillment and real quality time with people who actually love and understand you. This should be obvious, but when lots of people want to legitimize something, the first thing they must do is create confusion and complicate otherwise simple things. When enough people do that, it can make the obvious seem controversial when really it is merely inconvenient (the gun control "debate" is that way - wow criminals don't obey weapons restrictions, who'da thunk it?).
Finally, I wonder: how many people would have had to face and overcome their personal social weaknesses if they hadn't had Facebook as a readily available crutch?