Others swear by fish and how it revolutionised their terminal. Hell,I've seen people fall in love with Powershell of all shells because of its interactivity and cross platform scripting language that doesn't rely on Unix tools being present in $PATH. I don't get it, but that's okay; they can have their preferences and I can have mine.
You've got to find what works for you. Nano, emacs, .*vim, vi, using a magnetic needle to manually flip bits on a spinning platter, it doesn't matter, whatever keeps you happy and/or productive.
The vast majority of Linux users seem to use bash. Zsh has been picked up more and more by Apple for licensing and the "threat" of open source. I don't think shells like fish are a threat to the ecosystem as long as they keep the most basic form of compatibility with bash (not sh). You need bash installed anyway, otherwise you can't curl2bash to install "modern" Linux software!