Everything on my Win7 PC works.
After 15 minutes of searching, I cannot find a single good reason to change to Win10.
I do not need compatibility with phones, tablets, etc.
I have several programs I used for robot design/interfacing which I cannot guarantee will be Win10 compatible.
I was obliged for work to use a Win8 laptop for 2 months - if I had still had access to nukes, Redmond would have been a glowing hole in the ground.
Can anyone give me a good reason to upgrade?