To first understand why we do what we do, it’s good to take a look at seeds. The total amount of seeds in the game can found with the following calculations:

A seed has slotswith any of the following characters: abcdefghkmnpqrstwxyz2345689
This gives us 10,460,353,203 total seeds.

This sounds like a lot! But consider what we are rolling into. If we assume we are trying for maximum score, the seed must contain
All rare nodes spawning (ten total. 0.1% chance)
All combats be extreme corruptors (25 total. 9E-14% chance)
All enemies spawn at maximum or near maximum XP (100 enemies. 1E-50% Chance)

The chance of any one of these happening is already extremely slim. The first two alone is a 1 in 2,305,843,009,213,693,952 chance, before we even account for random combat XP.
”But wait, that’s more seeds than we have?” I hear you say. This is the main justification for mods. Even if the best seed does exist (we haven’t found it), people would generally prefer to not play the same seed every single run. Modding gives everyone the ability to replay the game while being competitive for the Highscore, without forcing people into exactly the same lines.

Additionally, seed hunting is excruciatingly boring. Before mods were considered acceptable, players would spend days looking through seeds to try and find one that has a higher maximum and the more time went on, the worse it got. Eventually it became a lot less about playing the game, and more about who could find the best seed. The use of mods keeps us from slipping into a forever escalating game of seed searching.