People can't really get used to change. If something is better for whatever reason but people aren't used to it, people will hate it.
Windows 8 is actually really awesome. Despite what bad reviews you read it is good. Microsoft has actually made something very competitive and it shows. The only problem is that it is different. There is no start button and it functions more like a tablet than a computer. There was a bit of a learning curve to using it but for the most part Windows 8 is awesome.