Fully agree. It feels like fish is the Apple of shells, in that regard. Unless you really love to tinker with your shell, the great defaults and great UX make it really easy to recommend.
Bash: https://github.com/standardebooks/tools/blob/master/se/compl...
ZSH: https://github.com/standardebooks/tools/blob/master/se/compl...
Fish: https://github.com/standardebooks/tools/blob/master/se/compl...
That said, I believe that zsh has a bigger community, and therefore most likely a richer ecosystem with more plugins. For example, oh-my-zsh has 142k stars, and oh-my-fish has 8k stars.
However, even with the rich ecosystem of plugins, I wasn't able to get my zsh to be as pleasant to use as my fish, where I only have some self-made customizations (not even using oh-my-fish).
But if having lots of plugins to choose from is important to you, zsh may be a better choice.