I liked fish a lot but various tooling at work just expected you to be working in something sh-like. I handled sourcing files of env vars with some utility functions but I still found myself having to drop into bash/zsh pretty often.

I feel torn because I really can empathize with making a clean break. But it also precludes a lot of people from making the shell a daily driver when your co-workers are shoving shell scripts your supposed to source into your env into github, lol.