You keep making this sort of statement without backing it up in any way. It ought to be pretty easy to provide documentary evidence that Windows 10 was a shambles on release. So why do you keep evading the question?
I suppose it depends on how you use it, if you just use it for running a browser then it is fine, it is when you get to running software and hardware that the problem start.
Vegas played up on it, my Scanner would not work on the launch version correctly, My sound card would muck up on Windows 10 because MS wanted to update the drivers to ones that would not work and because MS think they know best, they only allow drivers updates to be disabled for a certain amount of time.
The one strange things is that the launch version recognised my printer and put some sort of drivers on, but the November update don't recognise the printer now, which is not a bad thing.
Don't forget about the unmatched context menus and the unresponsive start menu, something which I noticed other people have had problems with, also the problems with some Nvida video cards.
Windows 10 was not ready to be launched and was a rushed job, now we get the excuse that it is a evolving OS.
Desktop machine now powered by windows 8 pro 64bit, no dreaded metro and Linux , laptop by Linux