Okay, guys, in the post-nuclear world there are giant scorpions, radroachs, ants, flyes, this nasty casadors and very big and good armored mirelurk. But wastelanders, supermutants, ghoules and anybody else are so stupid, that don't use free armor or weapon or misc from this creatures. Only one person, who use chitin in all Fallot series, was crazy girl Antagonizer.
Ok, let think, that civilized humans, in Vault-City, NCR, BS or Enclve has armor for many generations to future. But... But why farmers, traders, raiders, tribes, CAESAR'SLEGION, at end, dont use it? Morrowind's ashlanders or Skyrim's Falmeri look more intelligent, using nature armor, but in the wastelanders never even try to do for example, mirelurk cuirass!
So, subject is a question.

How do you expect the average wastelander to take down a giant radscorp?