Change is scary.
I've been using Windows 10 for about a day, and I don't know what all the crying is about. It's a massive improvement over the user interface for Windows 8/8.1 (which 50% of commentators on here didn't use for more than 5 minutes before dismissing it) and is intuitive. Why would you want to turn off live tiles? Are you so enamoured with your iphone that you don't believe in icons that can update themselves, save a little number in the top corner?
Try it, you might like it. And try it before all the usual suspect reg commenters ("Linux is awesome, I wish it was like KDE") tell you what to think.