"If you couldn't justifying the technical improvements of Windows 10 over Windows 7 what made you think that a small service pack would change that?"
People are still hoping that there will be one killer feature that will make it worthwhile to "upgrade". At work i have a surface so i have to use win10.
Windows 10 features that I like are 1) better multi monitor support 2) better direct access VPN client 3) wireless display sharing is cool
Other than that, I really don't see a need for anyone to upgrade. You have a boatload of crap to deal with over 7 and yes as time goes on, the problems with windows 10 keep adding up. As others have mentioned, windows 10 machines frequently get into a state where you have to blow away a user completely to fix it. Sometimes even the whole machine. Something gets corrupted in the microsoft store, and even if you don't use it, it can create negative effects everywhere.
Patching in the corporate environment is a nightmare now, as each "patch" is actually a brand new operating system. I still haven't got things to go smooth between versions yet and expect another week of fighting before this new edition will image to workstations properly.
i dont care so much about telemetry. The main problems I have are this rapid feature release cycle ( 2 major updates a year is far too fast), and its various ways that it screws up and requires time to be rebuilt. Another huge annoyance is that they got rid of the file settings and transfer wizard, which has been a godsend since XP in terms of giving people the exact same environment that they started out with before i came in and switched the computer, or the hdd or whatever. Now I have to say "unfortunately we cant copy your profile cleanly anymore, so you have to start fresh", then i have to hand copy bookmarks back in chrome, desktop items, etc. Real annoying and like everythign else bad about windows 10, i blame the new features for causing these sorts of problems: the store and cortana. They couldn't get file and transfer settings wizard working reliably with these new features, so they dropped it as opposed to fixing it.
Oh and the number one reason i will never go to windows 10 on my home PC is the way in which it was pushed out. I lost all resepect for microsoft when they used windows update to deliver and trick people into installing windows 10. So I am morally opposed to installing it now because of the abuse of a great patch system that was windows update. Now it can no longer be trusted, and that is the real long term damage that they have done to their reputation. Abuse of their position.