My work in software development gives me a unique perspective on security. Thinking about, building, and deploying software includes wondering how others might hack their way into my systems. But most folks don't really pay much attention because it's hard.
An easy-to-follow article on why you should use a different password on every site reminded me that everyone who doesn't pay a little attention to their security is vulnerable to quite a lot of suffering if their accounts are hacked into! So, please, at least change the passwords on your bank accounts and other places that could be vulnerable. And use an app to do it.