I used to be fluent in FORTRAN.
FORTRAN is now obsolete.
Not fluent enough to work on fixing legacy systems...
I love what I do now.
I first learned to code in FORTRAN, too. Used an IBM 1620 with line-cards. It sort of morphed into BASIC afterward. I was programming into the late 1990’s with the various versions of it. I never made the transition into Visual BASIC since I was doing too little programming by then. BTW, programming was not my primary job. It was just a side job to make my engineering job easier.