
Originally Posted by
Malithar
Because they're clearly gearing for defense in situations (read; anything at all, ever) where it is not needed. As the Whm, I'd be annoyed that someone was being un-optimal for the role they were brought to, when they will not die. It's intentionally gimping yourself for 0 gain, only loss.
If it helps, think of it as "I don't trust you to keep me alive, so I'm going to intentionally do worse at the roll I was brought for in order to 'insure' my safety." 'Insure' because a shield will do jack all.