How often do we get to write green fields ground up code? Of course when doing that we try to architect stuff with no bugs. 80% of the job is refactoring old co

How often do we get to write green fields ground up code? Of course when doing that we try to architect stuff with no bugs. 80% of the job is refactoring old code, updating code that many other files depend on, updating/replacing dependencies and more. It is great advice if you just write C code in a silo, but the complexity of a modern app is beyond just re-reading stuff.