But for a longer answer, these biomes have a lot of synergy and correspond to different playstyles and it is possible to get both biomes on a world with drunk world or dryad seeds, most of you people wont do it. Although i glaze the corruption due to the inclusion of the Scourge and because the biome is just better, Crimson has a lot of better accesories and weapons, they also have a spear which the corruption lacks. The panic necklace is really useful and before you say BOS is good for mage, you only get 20 mana which is not even good for early game. Cursed flame IS AMAZING due to its damage over time but in late game it gets overshadowed because of Acid Venom, whereas you can quick swap kidney stones (ichor bullets) for better ammo when playing ranger. And Brain of Cthulu is actually easy, for summoner atleast (also easy for melee and ranged but idk about mage). 8 defense is not that much in hardmode but provides a good kick and putrid scent's bonus doesnt really impact you (5% damage and crit chance doesnt really help much imo). Chain Guillotines are MILES better than fetid baghnakhs, try to convince me.