We’d be dead too

If writing is a dying, worthless art, then I'd go as far to say that everything derivative of traditional pen-and-paper writing is just as meaningless. The art of writing persists because we have no other way of interacting with each other. Two of the biggest forms of media that still dominate our culture, movies and music, is entirely dependent on good writing, and both persist when they possess good quality writing. The longer they persist, the more impactful they are on our culture and the more easily we're able to express ourselves. Expression is really what writing is powered by, after all. Frankly, if writing was dead, so we would be too.