I really love NixOS and use it on all my devices. Its not as difficult as people say and it really makes the linux experience a piece of cake once you get it down.
The single config file to control almost everything is just what I was looking for in linux and the fact that it solved any kind of dependency hell I have experienced in the past is huge. If I had to list a top 3 it would be NixOS, Fedora, and Arch.
I had this exact same thought recently and it scared the fuck out of me for some reason. Probably the thought of being forever alone. Then I realized its not that big of a deal but an interesting thought nontheless.