People who have maintained these systems know the level of pain is much worse than nearly any codebase. No code solutions that end up mission-critical can stay

People who have maintained these systems know the level of pain is much worse than nearly any codebase. No code solutions that end up mission-critical can stay active for decades. We have solutions from the 90s that, thank the heavens, I don’t have to work on them. If I did I would probably quit. But the business has to keep the thing chugging along, and it’s _very hard_ to get out of.