But the main reason there is because I approach systems as a sysadmin - they're not mine, I shouldn't make changes to them if I don't need to.
Before that, I was an emacs-as-shell for as much as possible, because I had only one environment to worry about and could obsess about how it was set up & get the benefit.
Consider this a friendly, local pub. Make yourself at home, bring your friends, have a good time! Meet new people, have a laugh, enjoy the ambience, and the Oxford commas.