Youd think that people spend their entire day mucking around in the Finder and we all know they dont. I probably spend all of 10 minutes a day using it, if that. It does the job pretty well and a tiny inconsistency here or there affects hardly anyone. To get past those inconsistencies there is a host of third party utilities, most of them free.
...I probably spend all of 10 minutes a day using it, if that...
While some people might think the Finder's not so important, it clearly _is_ to many (probably most) users. And those who have a past in OS 8 and OS 9 simply _know_ that the spatial Finder was a truth then and that the OS X Finder, in many ways, is very sloppy about things and often too slow.
If, coming from Windows and/or Linux, the Finder is "okay" for accessing the filesystem, in no way does that make it good enough for long-time (10y+) Mac users.