I'll echo veen's thoughts by suggesting that the true way to understand your value to Facebook is to go through the exercise of buying some ads. There's nothing secret about what they do or who they are; Cambridge Analytica wasn't doing much more than extraordinarily comprehensive A/B testing. You can't get the full Steve Bannon treatment as an ordinary citizen but you can discover just how easy it is to target Magic:The Gathering fans over 45 who listen to Rod Stewart within half a mile of your zip code.
Cambridge Analytica created fake issues, targeted "news" and ads at a specific subset of people to get them riled up about those issues, and then had those people show up at a fake event to protest the fake issue they created. They then taught the Russians how to do this at a conference in St. Petersburg. And the Russians (and others) have been building fake profiles for YEARS, using scraped data, activity, photos, and posts from legitimate users like me, to build out their probable-looking profiles to promote their dezinformatsiya campaigns. It's the sobering realization you come to when you see your photo used on a profile for an alt-right fuckstick, and read in depth the things the whistleblower at CA was involved in.