I think the biggest is simply having access to your data on non-apple devices and non-apple browsers. I.e. using it in Chrome or Firefox or whatever browser you want, as long as there's an extension that supports the browser it's likely available.
You can store a lot more data in Bitwarden as well, including custom fields, so you aren't stuck with just a username and password and optional 2FA. With Bitwarden you can do security questions, a notes field, etc.
Sharing with family is another big feature. Sharing your cable login, wifi password, streaming services, etc.
There's a whole list of them, but I think those are sort of the top 3 for me.
Right, but I often leave notes in my login items themselves. If the account doesn't use an email address to authenticate I might just put the email address in so if that email ever gets shut down I know which accounts need to be migrated, as an example of why I might do that.
You can store a lot more data in Bitwarden as well, including custom fields, so you aren't stuck with just a username and password and optional 2FA. With Bitwarden you can do security questions, a notes field, etc.
Sharing with family is another big feature. Sharing your cable login, wifi password, streaming services, etc.
There's a whole list of them, but I think those are sort of the top 3 for me.