This is me as well - unabashedly a bash person. My reasons to not switch are not driven by the feature set offered by the various shells, but by the fact that I don't want to learn/think or be bothered with the nuances when I log in to various remote hosts, containers, and what have you. When I write shell scripts or installers, I want a single language that is reasonably likely to be present wherever it runs - and that today is bash.
Agreed - people have told me that other shells are better (and I'm sure they are better than bash in some ways) but for a shell, ubiquity is arguably the most important feature.
