I’m not sure if it’s still secure, but I don’t want to change it because of all the logins that would have to be updated. Is this a reasonable approach?

I’ve used the same password for many years now (since around 2007). It was originally created when I joined my first social network and has since been reused on multiple sites. Some of these are no longer in use, some have changed their login systems so they’re no longer compatible with my old password, and others haven’t changed at all
https://t.co/3Tk4MD7ER1