Dark mode, no argument. The only correct answer is dark mode. It’s easier to see, write, and read, and doesn’t give me a headache.

Normal/light mode, I can literally feel my eyes strain and ache, my retina blasted away by the searing white light.
Edit: just realised light mode is the same feeling I get when I’m reading a book, and the sunlight hits the page just right so it glows, but you’re too comfy to move and try to read through it… And go blind