I certainly expect my phone company to not record my calls, or my isp not to mine my email. The problem isn't that fb is social media; or that Google/Gmail is an email provider - it's that both of them are ad agencies and private intelligence agencies (they gather, refine and sell information; ie intelligence).
So it really is: Facebook is an intelligence agency and information broker: why would you supply information on yourself and your friends to them. And the answer is likely: I didn't know they were an intelligence company; I thought they were a (social) personal media platform. Like email or a blog, only slightly more modern.
And this isn't a wild expectation. Eg the telephone providers are regulated, and can't sell the content of your calls, even if it's "just" if you're talking about a recent pregnancy, or how you're thinking about buying a car...
I'm sure Norwegian military intelligence has a semi legal access to meta data and contents of my calls: but at least it's clearly illegal for them. The largest isp/phone provider (telenor) actually fought back against the eu data collection directive because they had to store more data than they currently did (3 months).
But yeah, data protection in the private sector in the US is dismal.
So it really is: Facebook is an intelligence agency and information broker: why would you supply information on yourself and your friends to them. And the answer is likely: I didn't know they were an intelligence company; I thought they were a (social) personal media platform. Like email or a blog, only slightly more modern.
And this isn't a wild expectation. Eg the telephone providers are regulated, and can't sell the content of your calls, even if it's "just" if you're talking about a recent pregnancy, or how you're thinking about buying a car...