As an administrator, powershell is an essential tool these days. There are tunables that Microsoft simply only exposes via powershell even in their cloud Microsoft 365 environments. Just last month I had to rely on Powershell to trim previous versions on SharePoint, and 2 weeks ago I had to use Powershell to adjust a parameter on Exchange.
But also being able to pop a Powershell session and quickly apply a registry fix or run a diagnostic command or even just install a piece of software without disrupting a user's work is absolutely brilliant (plus saves a call when I can just email back and say "I've pushed it remotely, reboot and it should be sorted now")
I actually had to do that due to something preventing me from upgrading to Powershell 7 on my workstation. Adapted my script for Linux and ran it in Powershell in Linux
As a sometimes Windows admin, I completely agree. Plus so many things that become simple one-liners instead of taking forever farting around in a GUI tool where a little misclick screws up everything and documentation requires 27 pages of giant screenshots.