A little history
Let's go back to the time when humanity invented writing. Then it was a completely new technology. Thanks to writing and printing, sciences began to develop, which gradually brought man to the point where he is now.
Before that, oral speech, drawings, and music were used. But when writing appeared, society was transformed! Now, of course, it seems absolutely natural and normal, but not so long ago people could neither read nor write. Back then, this was the norm.