Like them or loathe them, Metro-style apps are here to stay, so let's stop agonising over the lack of a Start button — here are the very good reasons why it makes sense to get rid of it.
Read more at source:
Removing Start for Windows 8 was the right thing to do | ZDNet
For those that can't live without the Start Menu, see:
http://www.eightforums.com/tutorials/8528-start-menu-restore-windows-8-a.html