I’m just writing something so I can read and go to bed

I wonder if I should start keeping a journal. I’d imagine it’d be useful since I’m a creative non-fiction writer, but I feel like my everyday life is so mundane, there wouldn’t be anything to write about. Ie. I went to work. It was busy/fine/normal. I came home, had some food, played Age of Empires, watched a movie, procrastinated working on my memoir, then went to bed. Man, what an exciting life I lead.