I was initially a little wary of Windows 10 but when I started using it I was all right with it - for a while. It seemed to be stable, it ran the applications I needed (Pinnacle Studio and PaintShop Pro) and it seemed to be faster than Windows 7. Seemed like a good move for me.
But then I got a new computer with Windows 10 pre-installed. I thought, "great, now I can move my old computer to Linux like I planned and still run my important applications on the new one." Things were fine, until I realized that I was connected to the network without having entered my network password. And it knew my passwords on various websites that I had accessed with Edge. It knew how to access my bank, my social media - everything. Now, I am not a big fish by any means, but I do not like the idea of my passwords and keys being stashed on a server over which I have zero control.
Do I believe Microsoft will do Bad Things with that information? No, I don't. It's convenient to have it know what I need for me so I don't have to look it up. But, it's unnerving that they harvested that info without my knowledge. It also is unsettling to think that it's on a network computer somewhere.
On this basis alone I hesitate to recommend Windows 10.