To me, this is about choice. If a computer has a file system that is accessible to the user and supports files and hierarchical directories, then users can cho

To me, this is about choice. If a computer has a file system that is accessible to the user and supports files and hierarchical directories, then users can choose to use it or not. If they want to use directory hierarchies then they can. Or if they want to store all their files in one place and rely on applications to present filtered views or search (not necessarily even in terms of files) then they can. If the file system is not accessible or doesn't support hierarchical directories then you have no choice. This is not an option that interests me.