[mothered]

most users that configure it that way use the same passphrase for every file though, but you don't have to (you'd just be prompted for a password if it isn't in the keyring)

In my case, I don't like the Idea of authenticating with the same credentials for each device and/or file.

If one (password) Is known, the others are exposed which sort of defeats the purpose of the entire encryption. Yes It's an Inconvenience using dedicated authentication, but as mentioned, an overkill (within reason) Is well worth It's Implementation. Those who operate otherwise, It's good they have the option to configure It with the same passphrase.