Windows handles a lot of abstractions, to hide users from the nitty gritty details (OS X does the same thing). One of those things is hiding as much of the file system as possible.

Unix usually has users engaged at a lower level, adding a startup daemon means moving a file to a certain place. That shows that filesystems are much more the direct interface for the operating system.

Also, it is possible to have a Unix operating system, but have a completely different filesystem underneath. This is just not possible for Windows users. So there is no choice, so it is nothing Windows users think about in general.