I agree with you when it comes to the tired old "nothing to hide" argument. I'm so sick of hearing people talk about how it's OK for Big Brother to look over their shoulders, because they "ain't got nothing to hide. I ain't gone done no nothing wrong, so what's the problem?"
PS: Avoiding social media is simply not enough. Facebook can and will track you whether you use it or not. You have to take things one step further by denying your apps from communicating with Facebook.com in the first place. There are multiple ways of doing this: host files, browser addons, firewalls... take your pick. Likewise for Facebook.net (it's not just Facebook.com), fbcdn.net, Google.com, GoogleAnalytics.com, gstatic.com, YouTube.com, YouTu.be, ytimg.com, GoogleSyndication.com, GoogleAPIs.com, GoogleTagManager.com, GoogleTagServices.com, GoogleAdServices.com, DoubleClick.net, and practically a million others.
That's not even getting into the government's illegal wiretapping of the internet. The only remedies for that are encryption, web relays (that is, proxies, VPNs, TOR, and other similar technologies), and constant activism. Of those three things, activism is easily the most important. If you don't stand up against big government now, anti-freedom sectors such as the NSA will find new ways of countering the aforementioned self-protection measures. This is especially crucial with Trump taking the White House, as he's going to bring surveillance to a whole new level, while forcibly silencing anyone who opposes (unless a large quantity people oppose so loudly, he can't possibly silence them all).