I have an example of a Windows 8 annoyance I experienced today. I was using a Windows 8 laptop, and was in the process of configuring a router. So I had to open a PDF, and while it was nice there was a built in reader, it opened full screen and therefore I was unable to see my connection to the router. Why in the world would I not be able to resize that PDF reader, so I could have it open beside my configuration window so I could reference the instructions while inputting the commands? (Because somebody who would have done the same in a tablet would not have had resizable Windows...so I guess desktop users should not have it either) Then when I finished with the reader and dragged it to the bottom to close it, instead of going back to the desktop where my router connection was, it left me in the damn start screen.
Sure, had it been my everyday use machine I would have certainly replaced the metro version of the PDF reader with a desktop version that could be resized..but it's a shame that I have to replace everything in Windows 8 with something else.
Just another reason using Windows 8 irritates me.