This. I've been actively trying nix-based tooling on and off for my projects because it is legitimately solve the problem around sandboxing, versioning, reproducibility, consistency, etc. Recently, I'm trying to use asdf (and its faster alternative, rtx) and I keep telling myself "huh, nix could solve this problem better". But, damn it is infuriating to learn. Like other commenter said, it is the escape hatch that I'm missing so much. I really really want to convince myself to learn nix The Right Way. But, it feels like you will have another learning curve when using a nix-wrapper tooling.

I still have a high hope for the future of nix. And I believe the time nix will rise in popularity is when they have sorted the UX-related issues.