I've been running Windows 8 since the RTM went to MSDN. I adjusted to the cheese-moving pain of Windows 8 within a week.
Four months into Ubuntu with Unity I eventually adjusted to the cheese-moving pain of Unity by switching to Mint.
Ubuntu has no leg to stand on when it comes to new versions of an OS making unwanted changes to UX.
[Before anyone chimes in here, I know you can set up Ubuntu to work with other desktops than Unity, but IMO there's not really a compelling reason to stick with it when the out-of-the-box experience is inferior to another distro.]