The internet is mostly known for being a nightmare for your privacy, but I also think there is another side to that coin. I mean, it is insanely easy (and common) these days to do all your internet communication with messengers, that have pretty much unbreakable encryption (Signal). That was not possible for the average person before computers and the internet. The government could easily read all you private letters.
Also, all our web traffic is fully encrypted with https (although that is more of a security than a privacy thing) and most modern phones automatically do full disk encryption for your files. It is also trivialilly easy to use a proper end to end encrypted cloud storage (proton, tuta etc.) or even use unsafe cloud storage like Google Drive as long as you encrypt your files locally before uploading.
I know, the internet is still a net negative for most peoples privacy, but it is pretty cool how far we’ve come with encryption.
It doesn’t have to be the government. It can be a suspicious spouse, a nosy family member, a judgemental neighbor, an opportunistic burglar, even a murderer. You’re thinking in way too narrow of a scope.
But to really drive the point home, since “no one” does those things, please leave your front door unlocked on Monday for me. Thanks!
People have been cheating for millennia without the benefit of encryption.
There are 350 million Americans. My door is unlocked most Mondays. Good luck. I don’t even own a gun. Find me and you win.