I wasn't paying attention to the Windows 10 hype until now, just occasionally stumbled upon a post here or there talking about it, but today I stumbled upon some pretty interesting
details about their updated EULA—and unless they do some changes I won't be updating to Windows 10 now neither in a year or two.
The major off-putting change: Windows 10 has mandatory Automatic Updates.
You can no longer manually pick only the updates you wish to download. They'll update silently and you can do nothing about it. Yikes. How many deathly freezes will take to Microsoft rethink this? (source
Another change I believe will be pretty unpopular with many users: Windows 10 can disable third party software and hardware they deem illegal.
I have some issues with Microsoft interfering with non-Microsoft software, and I don't like the "hardware" part at all, since it's particularly vague in the new EULA. I don't quite trust Microsoft to accurately assert what is legal or illegal—we all know they're not the sharpest knife in the drawer—and I fear we'll see complaints about it disabling legit apps in the near future. (source