Yeah, I was about to make the exact same comment albeit mentioning Sophocles and his roughly 120 plays.
If you’re into classical literature, what was lost can be extremely tantalizing. I read Cicero’s De Re Publica recently, of which only about 35-ish% survived. What’s there is so interesting, both for what it says about the structure of the Roman republic as it existed, and what an educated traditional Roman of the senatorial class thought about how best to structure society and government. The concluding Dream of Scipio is enough to make you cry, not just for its extreme beauty and elegiac tone, but also for the fact that the dialogue it concludes only came down to us in a mutilated state.
While much of what was lost was surely dross, we also lost some of the great achievements of human culture too.
