Linux

I (maybe) ended distrohopping last year when I gave NixOS a shot. I can't recommend it for beginners but once you understand generally how things work on Linux (and have an interest in programming) it's a superpower to be able to define your entire setup as a single git repository. If something ever breaks, I can reboot into an older commit and keep using my computer, or branch off in a different direction... I've only scratched the surface of NixOS and yet I can already make a live USB containing my setup with a single command, or deploy it ("infect") to another machine and manage e.g my work desktop and my personal laptop sharing most settings. Also it taught me about Nix (the package manager, which also runs on any distro and macOS independent of NixOS) which I now use to set up perfect development environments for each of my projects... if I set up dependencies once (as a flake.nix shell), it'll work forever and anywhere.