Because many distros ship with /bin/sh linked as bash, I think using arbitrary shells for your personal scripts encourages bad habits that can easily lead to mi

Because many distros ship with /bin/sh linked as bash, I think using arbitrary shells for your personal scripts encourages bad habits that can easily lead to mistakenly writing non-portable scripts elsewhere without realizing it. This has happened to me many times! POSIX shell is not really worse than bash or any of the other choices imo. For tasks to which it's not suited, bash et al probably isn't either, and you should just use Python.