I have used fish for many years and always been puzzled why it is not more popular. If you want an easy and effective shell that gets out of your way then it is should have been an obvious choice.

Do you have any thoughts on why people don’t try it out? Where u also reluctant?

In my case it was the fact that fish's scripting language is incompatible with bash's that made me switch back to zsh (after a few years of using fish). It's not a show stopper (otherwise I had switched back earlier), but there's been a dose of small daily frictions because of that.

I try not to use nonstandard software unless it's something I spend a lot of time on. The shell became very important to my work recently, and only then I started looking for alternatives to bash and zsh.