Originally Posted by
Bovinity
Adding more stamina isn't just about surviving 3 hits in a row though. More stamina also means you have to be healed less to survive the next hit.
Granted, your healers probably keep you topped off whenever they can, but that might not always be the case.
So if you're topped off and that boss is hitting you for 25k and you have 51k health and you get hit twice, your healers have to heal you for 24,001 hp to keep you from dying to the next hit. But if you had, say, 58k hp then they'd only have to heal you for 17,001 to keep you from dying to the next hit.
Sure, that's a bad-case-scenario that maybe your healers shouldn't be in very often, but it can make a difference.