Writing clarifies my thought more than anything. It converts chaos into an order of some kind.
The better I write and explain, the better I get at solving interpersonal problems.
Writing protects me against the Dunning-Krugger effect. The effect is where one has learned a bunch of things but isn’t aware that he knows.
This is because writing builds up documentation of progress. It’s something that I can look back on and derive insights and meaning.
Writing serves as a public view of my knowledge and ideas.
It serves as a great self-promotion on a resume and during job interviews.
My own writing provides a fall back for my future self when re-learning or making important decisions.