I have to agree with this train of thought and add if it works don't fix it.I think it's more about change than laziness. If you were a Windows 95 user who suffered an unfortunate accident that left you in a coma for 15 years, you would have minimal issues navigating the UI of Windows 7 when you came out.
If used in a business environment Win 8 thrown at staff used to XP or Vista or Win7 can be disastrous. Time is money in any business and having to waste time training staff how to use a new operating system is time wasted. Some may never get the hang of it.The new interface forces users to re-learn how to use their computers. The interface is great if you're using a touch device, however if you're bound to a keyboard and mouse, it leaves a lot to be desired.
I just don't understand the logic of taking my cellphone interface and trying to make it work on my computer. I'm not lazy by any means but hesitant to throw in the towel on what I know works for me to blindly leap on the, sarcastically speaking, "New and Improved" bandwagon.