I think the best thing that MS managed to do was convince people even in this thread to use the word upgrade when it comes to changing to windows 10, it's a change of the OS, if you have a PC which is perfectly functioning with Win7/8 and you are thinking... is Windows 10 an upgrade for me, think can you improve on a system which is working perfectly? no, you can change it around and then find ways to make it work for you again... but really if your PC/Laptop is perfect now then the change is just that, a change to MS's new system and you are handing away your rights to ever have this choice again down the line, because a part of Win10 which people do not like is the lack of choice regarding updates, and those updates can include critical things... such as Windows 11 or 10.1 which will all be considered critical updates from now on.
Me ranty long time, no likey Win10, remove 35583 if you see it on a family machine and they're complaining about that Win10 popup or have an older system which will not be compatible with Win10 drivers