PowerShell is ten years old today. If you work with Microsoft products you'll be familiar with PowerShell. It's almost impossible not to use PowerShell. You'd have to be pretty belligerent to ignore PowerShell.
If you know me you know I love PowerShell. I truly believe that anything can be achieved by using PowerShell and a well-written API. Look at how well it integrates with tools like TeamCity and Octopus and you know it's vital to work with DevOps.
Check out the celebration on Channel 9 and read the blog post over on MSDN.