Enjoy :

-A bug where explorer.exe stops showing image thumbnails and takes an anormaly long time to -load until it says ♥♥♥♥ it , and stops showing even your hard drive . (i had this problem , did anyone got this problem too ?)
-Very long startup times compared to older OSes.
-Virtually no benefit in performance
-The privilege of having DX12 but the total lack of software that supports it
-more incompatibilites with your old games and software.
-Abusive telemetry.
-Very frequent and slow updates , that always get in the way if not configured correctly
-An actual loss of performance due to bloatware
-♥♥♥♥♥♥♥ flat/material/ugly/♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥ design.
-2 control panels , the only one being useful is the one that isn't win10 exclusive
-Ads on ♥♥♥♥♥♥♥ minesweeper (no , i'm not kidding)
-Ads on your start menu
-Cash-grab mobile games installing themselves on your PC , desguised inside official updates ... in other words : code they CAN'T verify inside their OS , which can lead into security problems , or more ads on top of the ads.
-Probably other ♥♥♥♥ i forgot.

vote with your wallet (or data , they looove that too.) , keep windows 7. (or 8.1 , it wasen't that bad either , even though i got into a few problems with it)