I move around within the States. I know it's not good in Mexico, but I think you're overestimating how well-connected the U.S. is. My internet connection, whether it's cable-based or cellular (which comes at a high cost), is pretty horrible or nonexistent in some places. But I don't see what that has to do with the file system. There's nothing to manage. I've got a camera roll, iTunes music (local not cloud), and maybe a few documents; not sure what else there would be. It's mostly fine the way it's managed automatically..
Its fine for you. People are different, have different needs. If you work with more documents, etc. and do not live or work where you can access the cloud then the file system sucks. Other than the cloud most apps have their own storage access and having to keep multiple copies, one for each app. Not all Hub type apps share with all of the other apps and most share with icloud, dropbox, etc. Not having access hampers this for anyone that uses their ios devices that way.
You don't see how it affects it. Fine, doesn't mean everyone are the same as you. You don't see how being able to access files in one location by all apps instead of cloud locations is far better for offline working and I don't see how you can't see that. It's pretty basic computing.
Moving a document, etc. to multiple applications can involve extra applications if you do not have access to icloud or Dropbox (central location), Its designed for cloud access. With android you have access to the file in downloads, etc. from each app without internet access.
Out of curiosity, do you truly see not having a central location to access documents, etc. unless you are online a good thing? Try looking at it from the perspective from someone that actually uses apps, works with documents, etc.
It's easy for me to say I don't see the point of fingerprint readers, apple's weak widgets and some other stuff but some use that stuff.