I've hopefully moved the discussion here to prevent more off-topic banter in the previous thread.
Just a question for you, not baiting here, because I only have access to an Apple at my Brother in laws house, I don't own one and I don't have access to usage stastistics.
When you run XP on your mac, does it crash on you? I only ask because I believe that most of the problems with windows, all versions, is the sheer volume of different hardware devices and software programs it has to be compatible with. MS isn't responsible for most of the drivers, they are written by the individual hardware manufacturers. They also don't write most of the software that people use on them. When a program is released for Windows, it's the software programmers who need to weed out the bugs. Granted, a windows update can break some software (I'm sure an Apple OS Update has done this as well) hopefully the software vendors receive help from the OS in minimizing and/or preventing these issues, but it does happen.
It's something Apple doesn't have to deal with because they strictly control the hardware. And software. If MS is guilty of anything, it's letting too many guests into the party, trying to gain market share by providing the most choice, while taking a risk on sacrificing quality for quantity. Apple throws an extremely exclusive, expensive party at Steve Jobs' and invites only a party of 6.

MS throws a kegger.

Don't forget your turtleneck and jeans.
Let's theorize a bit. If Apple takes over the home PC market, you will have a large number of PC hardware manufacturers (motherboards, video cards, sound cards, chipsets, ect) who have lost a ton of business. They will then do what they did with the burgeoning PC market in the early 80's and they will start making Mac clones. Apple will try to block them, but the sheer volume will overwhelm them and we will have a bunch of cheaper, Mac clones flooding the market and people will buy the cheaper machines.
Then we will all be using Mac OS X?? running on a bunch of different hardware, all of which are SUPPOSED to be made to a set of specifications set out by the OS maker (Apple) and which will have glitches and flaws and we'll be discussing how Apple should make it's OS work better on all the different hardware, blah blah blah.