Whoa. It's not everyday that I read something that far off. Look man, no one is saying that PowerShell should be the only interface in Windows. Channel 9 has videos of Jeff Snover and Don Jones showing how to get started. The thing that is great about PS is that the things you learn in those videos are applicable to anything else in PS. It's so incredibly consistent. If you don't or haven't used other command line systems its hard to get across to you how innovative PS actually is.
Trying to manage a large number of systems is just not doable with out some way to interact with them programmatically. PowerShell provides an environment that makes it really easy to do that by abstracting away the parts that are labor intensive. I'm not doing it justice here.
I've been a UNIX and VMS administrator in the past for what, at the time, where a lot of servers. I promise there is nothing else like PowerShell out there. (Maybe Python...maybe. But its hard to use Python as a work-a-day shell.)
If you don't have a need for lots of automation then bully for you! Some of us do and need tools like PowerShell very much.