Nope, there's plenty of you. As long as the shell is sufficiently compatible (which often entails being 'bash-compatible'...) and it has the rudimentary CLI features of command history and repetition I don't care either. I just use whatever is the largest common denominator - currently bash - in the knowledge that any scripts I produce are likely to work elsewhere. If it really needs to work everywhere I limit myself to POSIX shell but otherwise I use the handy bits of bash without remorse. If most of the world moves to zsh or Oil shell or Fish then so will I.
