Same, I had to learn this the hard way. In fact, I find that many (younger me included) are arrogant about *not* wanting to deal with writing due to it feeling like waste of time. But after maintaining codebases for 5+ years, you begin to appreciate younger you explaining wtf you were thinking.

And now, being at a point in my career where I have opinions on many things and discuss them with peers, I slowly realized writing about it was actually helping me more than anything.