My biggest gripe with win10 is the following:
- MS reserves the right to delete any software on your computer (whether or not illegaly obtained, paid for or whatsoever), whenever they deem fit and think it might cause stability issues with their OS. They will also not notify you if they did so and you will just one day be searching through your shortcuts, wondering where that program went to. Ie.: GPU-Z, etc. ..
When complaining about that, they will just point you to the EULA, which you did agree to without even reading.
- After updating, they tend to reset all privacy options you so carefuly and explicitly put in place the first time which, albeit, takes quite a bit of time if you do it thoroughly.
I am not upgrading to win10 anytime soon and am luckily not being reminded of it every other start-up, due to my own placed settings in my current win7. I may update once dx12 is out there and working/supported, and then only after there have been enough win10 privacy/settings workarounds released.