Yet another Microsoft OS with a fresh set of incompatible hardware drivers.
There was no clear vision about what a modern OS should be. It felt bloated and clunky. Vista felt like it was trying to be everything to everyone and not really being anything much special to anyone.
By contrast, OSX seemed to know what it was, and provided a cohesive integrated whole in which things just worked. Most importantly, Apple somehow managed to generally provide just one way of doing things. For example configuring networking on OSX happens in network preferences. On Windows, to this day, configuration seems to be all over the place, a bit here, a bit there, and many different visual and UI styles for the configuration. Made even worse by add in software for configuration from hardware vendors. Even now with Windows 10 I dread having to resolve ANY sort of network issue - where to start - which rabbit hole will the required setting be down?
Windows had - and still has - problems that have never bee fully solved and they make the platform so unappealing. Shutdown of the Windows OS could never be relied on to actually happen without hanging for some reason. Hibernate mode when closing the laptop lid was equally unreliable. Constant application crashes. Multitasking that just wasn't - all the time the OS would become unresponsive due to the behaviour of some application, which leads to the next major issue was a seeming inability for Windows to actually force kill processes when instructed - that rarely worked. Even something as trivial as deleting a job from a printer queue - basically forget it.
After Vista, Windows 7 seemed to clean things up a bit before they got even worse, with Windows 8 just being an absolutely definitive statement that Microsoft did not know what Windows was or where to take it - I mean for goodness sake - removing access to control panel? Crazy.
The latest versions of Windows are better but no-one has had the courage to do what Windows really needs which is to get rid of the registry - that chewing-gum-in-the-hair-mixed-with-spaghetti central configuration settings black hole.