I agree that all listed subjects are complex. But, as for me, I feel more confident with Sopromat or Theoretical physics than writing. When I've got the task to write about rap battle in the Philippines, I haven't had any idea what to do. Fortunately, I've found this resource blablawriting.net/influence-of-the-pinoy-rap-batt… with some content on that topic. To my mind, it also depends on the unique skills of every person. Someone is better at writing, and someone likes technical subjects.