"just works" is a big factor. Another part is front end vs back end. I still get contacted occasionally on various back end and infrastructure stuff I built fr

"just works" is a big factor. Another part is front end vs back end. I still get contacted occasionally on various back end and infrastructure stuff I built from 1995-2010, while I never hear from anyone about the user facing code. Front end has been replaced many times over, while the back end infrastructure just ticks away quietly...