It's a fantastic OS with 1 real flaw (the Explorer views resetting themselves).
The real problem is that people got used to XP, completely forgetting that nothing worked with the last big OS change, when we moved to Win2000 (which was the reason why Win ME was released). Even XP, based entirely on 2000, had big compatibility problems for the first couple of years.
That Win7, which is just Vista but a bit more scalable, is getting rave reviews from most of the Vista haters says it all really. It just proves that the Mojave Experiment, despite being an MS promotion, was completely right.