I was just a mainframe user, not an operator. (My week of work experience as a 15yr old notwithstanding.)

Of course, being a young mainframe COBOL programmer generally meant I hated it, longing for something more current. But nowadays I look back on it with a certain fondness. There are still aspects of ISPF that I miss. Well, a bit. Maybe.

(I don't miss having to carry armfuls of tape reels across site to the 'backup safe'...)