Seriously, what the fuck. You come across like Windows 8 murdered your parents or something. They're not going to "move away" from the desktop and suddenly break compatibility with 99% of all programs ever. Metro is just there to provide a unified interface for all Microsoft systems, so that people who use one will be able to adapt to another one easier, and so that developers can easily create a program that will work on multiple target platforms, should they choose to do so. If anything they may add a way to start default desktop apps in fullscreen Metro mode at some point but I refuse to believe for even a second the Desktop will be removed. Also, for the end user, their intentions don't matter jack shit because you can just install Classic Shell and BAM, you've got yourself Windows 7+.
Edit: also, that stocks and weather bullshit can be uninstalled without ever leaving the Metro interface.