I do.
I used to run Slackware, which is supposed to be the most Unix like distro. Though IMO it is the best distro out there, I switched when I got my new PC as there wasn't a stable 64-bit version at the time. Slackware can also be quite time-consuming as it's good for tinkering, after I finished Uni and got a job I just didn't have enough time to play around with it anymore (fully intend to re-install it for experimentation and gaming when I get the chance).
I now run Fedora Core 3 (amd64), which I find very easy to use and maintain. My g/f who isn't that au-fait with computers also likes it, in fact she complains about having to use Windows at work. There is nothing in the Windows world that could currently cause me to switch back (I don't have a copy of Windows at home since my installation of Win98 self-destructed a few weeks ago). All the games I've played recently have run well on Linux (Medal of Honour, Doom3, Wolfenstein:Enemy Territory, Half-Life 2, Unreal Tournament) and for most other things like Word etc there are more than adequate replacements on Linux. Whereas if I switched to Windows I would be missing a number of vital tools like Bash, GCC etc (though I do concede that most of these can be added).
I think BBKing makes the best point, many people don't really know how to use Windows, they just know where to click on the screen to make it do things but they don't understand why. People who have had little exposure to Windows will probably find using Linux a bit easier (like my g/f). Really the only way is to try it, with a little perseverance you may find that you prefer it.
p.s. Grandmaster, I'm using the Ralink drivers at home, I've got no problems using mine with a WEP key but I did need to use the command line to get the card configured properly. If you're having trouble I can give you a hand (when I get home, stuck on XP at the moment
