You say "many of us never used the same password". I help people all the time with computers, and I can tell you that most of them *DO* use the same passwords, especially older users. I'm not sure how you can speak for whatever "many of us" is, or what population sample "many of us" represents, but I'm sure you don't represent the majority of the population because that would be impossible unless a study was done.
I can't speak for you, but I've been using the internet since before there were web browsers. Back in the day, there was little knowledge of the internet and thus very little ads, and hacking.
As more and more businesses became online it now became difficult to remember different passwords for each business, but hacking was still not prevalent yet. That's when a lot of us probably started using the same passwords. The main fault of passwords at that point were having passwords that were too easy to guess which were vulnerable for brute force attacks.
Once the hacking started becoming an issue, I personally started to switch up the passwords and kept an encrypted file in a program that was password protected. I went back and proactively changed the critical accounts (such as email) but by then there were dozens of less significant accounts that needed to be changed so I prioritized most of the critical accounts (not Plex).
In the last few years there has been significant awareness for password re-use due to the proliferation of cyber crimes and smaller businesses (and larger aka Facebook) who don't bother with proper security. Safari warns you about re-use of passwords and offers to generate them these days. Every new account of mine gets it's own unique password, but there were still a few old accounts left that should be changed thanks to the Plex hack.
So if you think that I didn't even consider security and did nothing about it, you couldn't be more wrong. You need to stop making assumptions about others and condemning them with your holier-than-thou attitude.
