@JW - You can turn the edge functions off if you really want to. Go into the setting and there are separate controls for turning edge functions off.
For everyone else - When Win 8 first came out I didn't like it either. But I had to learn it. All my new work machines are being installed with 8. I try to impress on my users that they have two computers. One is a tablet for running apps like on your phone, iPad or Droid. The other is like the old Win 7 desktop. If they want to run an app, use the App computer. Otherwise stay on the Win 7 desktop side and treat it like a normal computer.
Windows 10: If you did not know, Microsoft is going to come out with Windows 10 sometime next year. I have the Win 10 beta loaded on a computer and testing it. Microsoft is going back to the Windows 7 desktop look. The Meta Tile or Start page is going to go away. All apps and programs will run from the desktop. When you click on the start button, it brings up the old style menu and also all the icons for the apps. It is easy to ask why didn't they do this is the first place. But it was a growing process from Windows 8 (which everyone hated), to Windows 8.1 which was much better to finally getting it right with Windows 10.