I don't know about that - there are a lot of people, don't forget, who can't administer their computers _at all_, for whom Windows's file-sharing is way beyond their skills, never mind Linux's. For these people, who will never attempt to do much more than check their e-mail, and word-process documents, maybe write a blog and upload pictures, Linux is no harder to use than Windows, probably easier.
These users, probably unlike you, are also not able to set up their machines to avoid the disadvantages of Windows, such as rampant spyware. I hadn't used Windows for a number of years until I was forced to use it at my current job - I was staggered to discover that your computer could pick up adware and spyware from the pop-up ads on more-or-less reputable websites (my computer got infected from a Spanish-English dictionary site, for example). Many non-technical Windows users I know have computers that are rendered almost unusable by pop-up ads and self-installing spyware junk - every time you open a web page, you get three or four pop-ups to clear, and, of course, all this unauthorised software chugging along in the background makes the computer incredibly slow.
There are also many people who don't do system administration on their computers because they are at work, and the administration is done by the company IT department. Again, for these people, Linux is no harder to use than Windows. I think this is where Linux is likely to have its largest growth in the immediate future.
So there's two cases where switching to Linux makes sense for non-technical users. What Linux currently does lack is a middle-ground for more complex tasks which doesn't require UNIX expertise (although it's not that far off - I don't think the RedHat file-sharing GUI is much more complicated than the Windows one, see http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/sysadmin-guide/s1-samba-configuring.html ).
Also, I think judging Linux based on previous experiences of UNIX is likely to be a mistake. The things that a Linux system shares with older versions of UNIX are invisible to most users - the major desktop environments, which are what the user actually interacts with, were created in the last five years. They're also explicitly focused on ease-of-use in a way that I don't think older UNIX front-ends like CDE were - Sun, for example, have carried out user-interaction tests which led to a radical overhaul of the GNOME desktop, and RedHat employ a number of GUI programmers (such as Havoc Pennington - see his free software UI manifesto at http://ometer.com/free-software-ui.html ) and interface designers (for example, Seth Nickell http://www.gnome.org/~seth/ ), again contributing to the GNOME project.
--
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ascetic; the reverse would be better"
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