You spent three weeks getting that Linux setup just right . Every config file tweaked to perfection, every package dependency resolved, the display manager finally working after that kernel update fiasco. It's a delicate ecosystem held together by bash scripts and pure willpower. Then your buddy walks in like "Hey, let me just install this one thing..." and you're immediately in full defensive mode. One wrong sudo apt install and you'll be spending your entire weekend reinstalling drivers and figuring out why X11 suddenly hates you. Touch my .bashrc ? That's a paddlin'. Mess with my carefully curated window manager config? Believe it or not, also a paddlin'. Linux users become surprisingly territorial once they've achieved that mythical "it just works" state. Because we all know it's only one chmod 777 away from chaos.