Writing has technical aspects, sure. You need skills, and training. And you need to be organised and disciplined about keeping up with deadlines and juggling projects. And writing has physical challenges, you have to sit and use your back and wrists and neck and eyes. But, you also bring your weird, inner, non-rational self to the desk when you write. The inner self that has views about what music you can listen to, or that you need to enact your writing rituals before typing a word. There are good reasons why you might like what you like, but a lot of it just is personal preference, and that is totally a great reason to take it seriously.