On the login screen, Hanab Live recommends that you "Do NOT reuse any of your previous passwords!" This is because most people have extremely poor password hygiene and use the same password for every single website that they go to. This is a really bad idea because if one particular website becomes breached by an attacker (or if one particular website administrator goes rogue), one person now has the "keys to the castle" and can login to your bank, your work, your social media accounts, etc.
Some slightly-smarter people have a few different passwords that they use for different kinds of websites (e.g. an "important" password for banks, a "medium" password for social media, etc.). While these kinds of people probably think that they are being smart, this is also a really bad idea because it doesn't solve the underlying problem of an attacker being able to pivot between websites.
The real solution is to use a password manager such as BitWarden. Every single website that you use should have a unique, randomly generated, super-long password. And the password manager will remember all of them for you and automatically enter them in whenever you go to a website. Easy.
If you use the same password for every website, it is analogous to not brushing your teeth. When you have bad hygiene, you might not notice any adverse effects right away. But eventually, not brushing your teeth is going to come back to bite you, causing a cavity, or worse. Not to mention that it comes off as pretty disgusting!