Why do we write - I stumbled upon a fs article and it made me retrospect about why I write. But first, let's see what I learnt from the article (link below).

Writing is the process by which you get the clarity of what you know and what you don't. It aids the understanding aspect of what you talk about. 

Writing is a double edged sword - it enables you to share your ideas as well as improve your understanding of the topic. 

Writing makes you explorer - as you continue writing, you think in countless different ways to come up with new ideas.