I want to be the king of my castle
I think the problem is the split between mobile and home/desktop use. The mobile world has long since sought integration to make things easier to use, we accept this compromise. The mobile is, by definition, an insecure environment where privacy laws in effect mean nothing. Let alone being unable to use efective AV products as all mobile apps are sandboxed by default.
For home use though things are different, we want to have full control of our destiny and data. Giving this up is a huge invasion of privacy and very presumptious.
We already know that Microsoft actively scans outlook.com and have even banned certain users for having "questionable" content in their mailbox. How long is it before the start scanning for unlicensed software and media and acting accordinly.
Also what happens if you login to Win 10 with a microsoft account and they then close your account for whatever reason? You lose the ability to access your documents and data on your own person computer?
This is just too dangerous a road to go down. I have been on the bleeding edge of microsft operating systems, installing everything from Win 2000 to Win 8.1 on the day they are released (yes, even Vista.) With the state of play surrounding Windows 10, I plan to stick to Windows 8.1 for as long as possible.