[ithkuil]

Modern programming languages are more than capable of providing an abstraction layer that can offer seamless file->struct and struct->file conversions.

It's basically the equivalent of ORM for relational database.

But nobody does it not because it's hard or because the language doesn't support it. They don't do it because we no longer think of file system the main "database" that stores your application state.

Instead we think of the filesystem as a lower level building block for higher level abstractions (such as relational or whatnot databases)