Yeah, they were used by humans. A lot of people seem to think that writing is what separates humans from animals without any interesting thoughts, but in fact m

Yeah, they were used by humans. A lot of people seem to think that writing is what separates humans from animals without any interesting thoughts, but in fact many complex societies have evolved around orally-transmitted knowledge. If poetry is your metric of value, it so happens that often non-literary cultures encode their teachings into verse to increase memorizability and support faithful transmission from person to person. Examples of such works include the Iliad and the Odyssey.