I don't think there is any question in people's minds that PowerShell is indeed the evolution of Command Prompt, but the reason that many of us still default to the old interface is that it still has all of the capabilities to accomplish what we need to do on our servers. What Command Prompt really contains is the ability to do the same things that we have always done from Command Prompt, and nothing else. Without realizing it, there are a lot of functions that you use the GUI to accomplish that cannot be done well from within a Command Prompt window.
The limitations within Command Prompt that force you into using your mouse to interface with the GUI do not exist with PowerShell. It is fully comprehensive and capable of modifying almost any aspect of the Windows operating system. How did PowerShell become so much more powerful than Command Prompt...