Linux

Nah, bash is fine.

As an admin this is madness. I'm good with bash,you know the shell I'll find on any running system.

What is most likely to be standard on a base system image?

No.

No.

I like bash, it's very standard. If you need better autocomplete I'd absolutely recommend ble.sh, which gives you an experience more similar to fish, without having to relearn the entire shell.

Look, I've been a fish user for years and still use it on some machines, but there are always cases where I cannot install fish, or fish is incompatible with a program I use (even via bass) or a feature I use in bash scripting works differently. Of course, I can always fix it, but it's always faster to just drop into a bash shell. I'm also much more familiar with configuring bash than zsh and therefore that's what I use. That's why bash is a staple on all my systems, even my BSD machines.

I think different shells are interesting and provide unique takes on what a shell can do, but telling people to stop using something that's so ubiquitous and useful to learn comes off as grandstanding to me.

I still default to bash, but nu had some really cool features like a built in jq and several other formatters and pagers.

Bash is good and is standard. Have been experimenting with zsh but don't really see the appeal

If I need to write a script that is too complicated to do in bash I'll do it in python

Thabks OP. Ive heard of zsh but I basically havent heard of the concept of using different shells. Certainly never used one, but I'll try it tomorrow.