Look, the only difference between the systems you're talking about (which suck) and the systems I'm talking about (which are great) is the people running them. It doesn't require a deductive reasoning class to figure out what the score is.
Slappy,
Is the point of having a car to DRIVE it, or to work on it swingin' wrenches?
I drive foreign cars (formerly Japanese, now Swedish) because, though I think working on cars can be fun sometimes, I don't want to HAVE to do it.
Likewise, I use a Mac for the same reason. I *can* spend lots of time tweaking, troubleshooting, configuring, installing, securing, etc... I just don't *want* to. People used to find out I used a Mac and say "HUH??? But... But... You're a COMPUTER guy, why do you use a Mac?" And the answer is, that I was getting paid $75/hr to make other people's computers work - My own free time was more valuable.
Windows has come a long way. I'd say that XP is better than much older Mac OS's, it's probably somewhere around the level of late Mac OS 9, or early Mac OS X. That's pretty good, but there's been a lot of improvement in the last 5 years.
Apple isn't perfect - I had some issues with my laptop kernel panicing for a short time after I bought it - After a firmware update, it was rock solid. Likewise, the first couple of versions of 10.5 Leopard caused one problem for me. 10.5.2 and later, rock solid. That's just computing for ya - I remember one of my favorite quotes years ago was "Microsoft - Where quality is job 1.1.2." (back when Ford had the "where quality is job 1" ads.)
It also seems that some of the folks that argue strenuously against the Mac haven't used one in years - You can't compare the Mac LC you used in middle school to the most whizbang Windows machine available today.
The bottom line is, computing should be accessible to everyone. You yourself stated that "No, anyone who has that many problems with Windows isn't a competent Windows administrator." The point is,
you should not have to be an administrator. Sure, it's nice to have a good Windows administrator in the corporate world, but it should not be necessary for every user to either be an administrator, or have one.