As others have pointed out, Windows 10 is bundled with malware right from Microsoft, in the form of spyware and adware. Forced updates happening at inconvenient times can leave a win 10 almost useless, particular if what you are trying to do is CPU intensive. There is a lot of lost productivity around the way MS has forced updates, even when they don't break something important. I know people that just gave up on the personal win 10 laptops because they just couldn't use them when they wanted. Updates on Win 7 are not entirely painless but you can at least schedule them for a more convenient time.
My workplace is on Win 7 and I cannot see them changing to 10.
I'm writing this on my Linux desktop which does not come bundled with malware and where updates can be run without interfering with using the computer. Win 10 has providest the greatest boost to Linux adoption that I've even seen.