Except, you know, none of us are evenly remotely interesting enough to justify government money being spent paying $100 an hour to see us shopping for anime figures and watch porn.
Even if they may not have humans watching you do these things live, they have the capability to record and store your entire digital Life for future perusal should you ever come under scrutiny or ruffle the wrong feathers
that information is stored in NSA data centers indefinitely
Things may be good for you now, will they remain so good when the entire history of you can be accessed and used against you? Some weird internet searches, the time you had your webcam plugged in and unobstructed and were doing things you didn't want shared, every image and file attachment sent to or from your personal email account, anything like that. It's there. And it can be accessed and used against you either by those collecting the data, or someone who potentially gains access to that stash of data
If you think nothing like that can happen, Snowden accessed and leaked a bunch of information from the NSA. Everyone's credit information got leaked from what was supposed to be a trusted and secured financial institution. How many data breeches make the news each year? How many more go unreported? Nothing is safe. Covering your cameras isn't totally out there.
At which point, they'd have to publicly admit they had wasted all that money spying on people who might possibly be important at a later date. I'm not saying it's completely ridiculous, but it's sort of stupid. Also a theft is completely different than spying.
They were revealed to be doing so... They do mass surveillance on every single person. It's not that they're targeting anyone, they're collecting all of the traffic. Collect data on every possible target. These collection processes have the capability to sort, match, and store it per person. It's all there automatically collected and curated, waiting to be accessed at any time. ---