I don't like it either. The look and feel is very contemporary and I reckon will age badly. I absolutely hate the stuff like disappearing scroll bars and forcing desktop/laptop users to put up with apps that are more geared towards tablets or phones.
Win7 and even XP has a nice organic feel about them, and a good mix of fashion and functionality which in computing are often mutually exclusive... although they've gone backwards with the default Start menu since Vista.
Sure, Win10 has the supposedly better underpinnings like scheduling, handling error conditions and general kernal stuff that's hidden from view.
But what you do get to see isn't exactly pretty.
The other thing is that for whatever reason, simple file and folder operations seem to get slower with each new OS. I've done data moves between drives in various configs and the throughput is about half what I'd have hoped for, and definitely slower than what you usually get with XP and 7.
Finally, the arrogance of making things like Safe Mode less accessable to the user - MS for whatever reason thought they'd made a bulletproof OS, but it seems to have a worse than ever reputation insofar as startup/shutdown and update problems.