I am for the support of windows 8 too
Here is an example of why I need Hyper-v on a Win8 computer (laptop).
My development machine is virtual (Hyper-v). If I have a problem with my computer, I can simply change the computer and import the virtual machine (no re installation... I can change a computer in a few hours).
When I do some tests (deployment), I have a completely empty virtual machine (only Windows installed (no patch)) and I can do a test. When it is done I restore a snapshot. After that I also have a completely updated machine (all the patches installed) and I can do the tests and see if it is working.
With the snapshots I can simply switch from one to the other machine.
As the computer is a laptop I can work anywhere even with no internet to solve the problem (and only connect to give an update when u bug is solved)