I have never had any of the issues talked about here. It is more stable than any of the previous versions I have run going back to DOS. You can control what Windows 10 is allowed to do. People should run what works best for them. I didn't think I would like 10 but after using it Would not go back.
We have not found it to be stable at all. It seems to be at the whim of the updates. We have had things break for weeks, then next update they were working again. Then again, it probably depends on what you are using the computer for.
You cannot control Windows 10. Microsoft can do whatever they want to your computer with Windows 10. Any control you think you have is just an illusion. At any given moment an update can come down and wipe out any changes you make. We have been at the wrong of that stick too many times with our one Windows 10 system we have in house.
I do not see it as an "upgrade" as it does not seem to bring any functionality over what I already have. As a matter of fact, I will lose functionality and have to purchase several third party applications to restore what I lose if I switch to 10. Seems to be more change for the sake of change. Just from a logical perspective, why change?