There are many helpful things about Windows 10 - security, update, performance. Then there's the new screwed-up interface. If they'd staged these two, or offered them separately, there'd be less resistance.
What do you mean by "screwed-up interface"? After using 10 (upgraded from 7) for the last few months, I can only say that the interface is better. Any changes that I've noticed have been improvements, so I'm genuinely curious as to what you're referring to.
However, I like the tablet oriented interface, as I have a convertible laptop, and it makes for a truly fantastic comic reader.