I cannot quite put my finger on what erked me with Windows 8.x. I have used windows since the early 90's starting with Windows 3.0. I just think it was the menu system which really put me off - I was happy with windows 7 and I even worked in Vista without a problem. I am forced to use windows 8.x at work but I put up with it. I never thought I would become a mac boy but I am just astounded with the ease of using the macbook. I still prefer a windows machine for office but for everything else I would rather use the macbook.
I suppose also the ease of integration between my macbook, Iphone and apple TV also has tinted my view a little. In the end everything just works.