I don't use Facebook either. I hate the way most people use it. For example, lots of people love to stir up drama because they're bored, or they like to start arguments over politics, also because they're bored. And then you have the desperate people who either (1.) want people to feel bad for them, or (2.) want to make their lives look enviable.

But I couldn't care less about trusting Zuckerberg. Any website you sign up for collects and (most likely) sells your information to third parties, even if their ToS document says they won't. OR they'll carefully word their ToS to make it seem like they won't sell anything even though they will (e.g., in the case of Facebook).

But really, Facebook (and any other site) is all about how you use it. The more you information give them, the more they take. Give them nothing and they have nothing to take.