8 sucks..
a few things that makes 8.1 so much better than 8
you can actually search normally, like in windows 7. if you wanted to search in windows 8, you could only search for apps or settings, 8,1 lets you search like in windows 7, everywhere
in windows 8, if you start up your PC, you will be taken to the start screen with apps, and a very ugly background. In windows 8,1 you can disable the start menu, go right to the desktop on startup, also, you can make the start menu's background the same background as your desktopbackground, which makes it really nice(for the 2 to be the same), and i really love pinning programs on the start menu, just press Windows key like you did in windows 7, but now it looks nicer, and if you really dont want that, just pin it to the task bar.
you can resize the button of the apps pinned to start
i could go on and on, but if you want to know just google it yourself