One reason i prefer Bash (and i mean Bash not just any shell) is that it tends to stay stable - scripts written years ago work just fine today. These days i mainly use Bash on Windows (via MSYS2) and really it is available pretty much everywhere, either out of the box or via installation.

If anything code that i used to write in Python at the past i write it in Bash nowadays, exactly because Bash has a better record when it comes to not breaking stuff. Though it helps that my Python use is also mostly scripts meant to run from the shell.