system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: The main points on why the NSA "spying" on citizens is bad

When I google, I just see things like "Why did it get so bad" and "Snowden leak bad for US business", but no one actually telling why it is bad.
What is the reason that I should be worried? Perhaps a link to somewhere, if you know a page that explains it well.
gpt
The main reason you should be worried is that the potential for abuse is huge. The NSA as it is right now is a little known organization with very little oversight and even less transparency. It's practically a stranger compared to other government departments.

The FBI tells us how many people it incarcerates each year, for what, and for what purposes. It follows the constitution, miranda rights, regularly PROVES that it follows these things, and is subject to pressures from congress. It's also supposed to be stopping many things that can be akin to terrorism.

The NSA will not even tell us how many terrorist threats it has thwarted, or how many it has detected, or how many it has failed to stop. It follows the constitution... for Americans only, and is overseen by a secret court no one is allowed to view or speak about. What this amounts to is "we follow the American Constitution and we aren't breaking any rules, Scouts Honor". Now they have access to everyone's history for the past few months, texts, facebook, games, EVERYTHING in a format that they can search on a whim at their leisure.

All you have is Scout's Honor keeping an NSA employee from using the search engine to check out that girl in the Yoga class on the way to work. Discovering she's single, and she's into jazz and frequents the bar downtown, and tailoring himself to be the perfect man in her eyes so he can get with that. Scout's Honor is all that's preventing an NSA employee from finding out that the math teacher in his son's catholic school is gay and threatening to out him to his peers if his son doesn't pass that midterm. Scout's Honor is all that's keeping the NSA from discovering your local senator is cheating on his wife, it'd be a shame if it got out, but we wouldn't out you if you stopped talking about all this NSA stuff.

Is this happening? We have absolutely no idea. All we know is that they have the data to pull it off, stored in a location to look at in their leisure, and most of them probably aren't Boy Scouts.