My understanding about XEX/XTS mode is limited. But from what I see, it has two good properties:
It is length-preserving so that encryption doesn't cost additional space.
It is deterministic, which is (usually bad but could be) a requirement in some use cases.
Assuming space is a scarce resource, encryption must be deterministic, while authentication is unnecessary, would XEX/XTS mode be a great choice for normal file encryption?
(A file is a byte stream, but we can impose offset-based virtual sectors on the stream and use these sector numbers in XEX/XTS algorithm.)