I am increasingly over Windows.
This morning my Windows 7 laptop rebooted four times while it installed upgrades and fiddled about with its registry. When it thought it was done it wasn’t, it had managed to lose the desktop and required a further reboot.
If you use OS X or Ubuntu, you don’t have to do this. The odd reboot and pause but that’s about it, plus some degree of user control over when and where you upgrade.
With ChromeOS of course it’s simply a reboot.
And, of course, as regular users of non-Windows systems know, they boot considerably quicker than Windows …