WOTD

prosaic
adj. Pertaining to or having the characteristics of prose.
adj. Straightforward; matter-of-fact; lacking the feeling or elegance of poetry.
adj. Overly plain or simple, to the point of being boring; humdrum.

"The greatest invention of all must surely be writing. [...]

Its origins are prosaic: it was invented by accountants, not poets, in the 4th millennium BC, as a spur of the counting system with which farming societies kept track of agricultural goods."