NixOS has ruined all other operating systems for me.

It’s made actually running a secure system so much easier, I love that when I define a new service I can create and manage service accounts and permissions very clearly and reliably. It makes it hard to screw up user permissions, which was something I hated dealing with in Linux before.

NixOS is wonderful. At the same time it's pretty annoying how often I need to test a workflow at my job and it just doesn't work because X or Y downloaded a prebuilt binary that can't dynamically load libraries. The solution is usually simple, but the fact that it's recurring sucks.