"This is the result of how many years work?"0.5 starson by qwerty75
Pros: It doesn't crash, much
Cons: Everything else
Summary: It is nothing more then bloated spyware. What a joke of an OS.
If you want your OS to be sleek and stay out of your way, go look at OSX or Linux.
If you want a slow bloated OS, full of restrictive DRM and backdoors that attackers can exploit, when MS isn't using them to check if your copy is pirated, for the hundreth time, and don't care if MS remotely shuts you down if the 101st spyware scan, I mean genuine windows advantage scan suddenly decides you are running a pirated copy. All at a ridiculously high price. Then this is the OS for you.
Otherwise, sticj with what you have and when you need to upgrade look elsewhere.