I always felt unwrap is preferable for diagnosing issues, which makes it useful in tests. A failed unwrap will point you directly to the line of code which panics, which is much simpler than trying to trace an issue through many layers of Results.

If you use `assert` in tests, I don't understand why you wouldn't also prefer unwrap in this context.

I think it's also perfectly reasonable to use in a context like binary you run locally for private consumption, or for instance a serverless function which allows you to pinpoint the source of errors more easily in the logs.

It's not a good fit for cases where you do expect cases where the unwrap will fail, but it's a great fit for cases where you believe the unwrap should always succeed, as it allows you to pinpoint the cases where it fails.