If you don't like it don't buy it. Simple
It's already very easy to buy a PC without Windows. It has been for a few years now. It's just that most OEMs think their buyers want an easy life and will want windows pre-installed. But many do give you the choice, if you ask or look at the options when buying online.
It is surprisingly hard to buy a Mac without OSX, though...
Or a Ford car without a Ford engine...
@Hugh_Pym "If they read the EULA they would find they are not allowed to do much. They can't sell the PC with their windows XP licence..."
Actually, if you read the EULA you will find that is just about the only thing you _can_ do with it - you can't sell the licence without the PC, but you can transfer the licence with the machine it is tied to.
"it doesn't cost them any more to keep the old articles relating to XP as well as the current ones for Vista."
It costs nothing to leave old ones there, but to write new ones which also cover XP then of course it does. Every time there is a bug found, or a problem running some MS or third-party application and they post a new article explaining when the problem arises and how to resolve or workaround it, they would have to also test the same scenario for all OS versions they still sell and support. This makes no sense, I don't expect them to tell me whether or not a particular registry fix to get something working also applies to Windows ME, or would not work on that OS, or would toast that OS. I don't think it is reasonable to expect them to test and document all those possible combinations.
If you bought XP yesterday and a bug was found today, you would expect them to test, document and provide a fix for it. They don't want to do that, so they choose not to sell XP (generally).
Why do people think Vista is all about a shiny Aero interface (note: TV adverts are aimed at consumers, not corporate users) and DRM (frankly I don't care)?
What about security (new firewall, UAC, DEP, file and registry virtualisation, BitLocker, loads more Group Policy controls)?
A totally new network stack with native IPv6?
What about power management?
A proper model for offline files that 'just works'? (rather than the XP per-computer implementation that was slow, prone to crashing and completely unworkable for large volumes of data)
These are all good reasons to consider Vista if these issues are important to you. If not, then don't upgrade, or go get a free OS if you think that will do everything you need instead. Open source is a great idea. Support is probably better than on a three-year old OEM licence for an MS / Apple OS.
If you don't want Vista, I'm not bothered. I have no MS shares. I really don't care if you don't think it is right for you. But stop whinging about it and simply vote with your wallet by not buying it.
I don't think Hummers (or most large 4x4's) are a particularly good choice of vehicle for the school run, so I choose not to buy one, but I don't think they should be banned or should be forced not to make them, or insist that if I buy one I am allowed to drive away a top-end saloon from the same company instead. I buy the car I think suits my needs.
(By the way, there is an anti-competitive analogy in there, when you look at how many second-hand cars are bought by main dealers as part-exchanges, and then never sold on. There are huge fields of unused second hand cars in Europe, because allowing them to be sold depresses the second hand market prices, which means people lose more in depreciation if they buy a new car, which means they won't pay as much in the first place, or they keep it longer. Either way, this means less sales for car manufacturers, so they help fix the market by part-exchanging above market rates and then keeping or scrapping the second hand cars)