Re: Error handling is hard - let's not do it!
"What's wrong with Windows XP (in the context of when it was a current O/S)?"
Ask Microsoft. It was so bad that they canned the Longhorn project and put all hands back on fixing XP. The result was XP Service Pack 2, which in its SP3 variant is probably what you are thinking of when you think of XP as a much-loved OS that everyone refused to give up for ten years.
It is the only time I can recall in Microsoft's history where they went back to an existing release and fixed the bugs in it rather than simply put out a different set of bugs under the banner of a new release.