I think it's due to poor management of the product and its release.
From my experience, Vista was hated due to very poor driver support, the ever-annoying UAC, and the fact that the new Aero UI (along with misc. other system services) took a significant toll on system resources.
At least the first 2 issues were both largely resolved via service packs, which is why you're probably not suffering much from those problems. The last issue was jointly resolved through some refinement of Aero, and the fact that the marginal resource cost became less significant once more powerful systems became available at cheaper costs.
The crux of the problem though, is that many people found under Vista that many of their devices quit working, their PC was slower, and they were getting pop-ups from UAC for basically everything that they clicked on.
Vista wasn't terrible per se, but it's negatives outweighed the positives for many people, and when you boil that result down to a binary value representing whether you think it was "good" or "bad", then the result is going to be "bad".
From my experience, Vista was hated due to very poor driver support, the ever-annoying UAC, and the fact that the new Aero UI (along with misc. other system services) took a significant toll on system resources.
At least the first 2 issues were both largely resolved via service packs, which is why you're probably not suffering much from those problems. The last issue was jointly resolved through some refinement of Aero, and the fact that the marginal resource cost became less significant once more powerful systems became available at cheaper costs.
The crux of the problem though, is that many people found under Vista that many of their devices quit working, their PC was slower, and they were getting pop-ups from UAC for basically everything that they clicked on.
Vista wasn't terrible per se, but it's negatives outweighed the positives for many people, and when you boil that result down to a binary value representing whether you think it was "good" or "bad", then the result is going to be "bad".