From one tank to other tanks..STR Gear is not a thing anymore..Get used to it now!

[Kaedan]

This isn't about emnity.

Vitality is not mitigation, vitality increases the pool of health into which healers can pour their healing, and from which damage is subtracted.

Obviously a tank's HP pool has to be sufficiently large to absorb the damage they're going to encounter in the dungeon, long enough for the healer to replace it. But once you have enough, having more doesn't help in any way - it doesn't even help the healer to do more DPS, because a larger HP pool just means they are postponing their heal spells, they will have to spend the same number of GCD cycles healing them later on as they would if they'd just spaced them out.

Tank heals scale of STR; this is especially true for DRK who's AD+DA combo and Grit+Souleater return HP based on damage dealt. This provides a form of active damage mitigation.. This HP returned, whether by a PLD self heal, or DRK's life steal attacks, is HP that the healer does not need to heal personally, and this means the healer has more time with which to DPS!*

The fact that the tank is also doing extra DPS and generating more emnity is just icing on the cake.

This is a common fallacy presented by DPSers who think it works in theory, but don't understand reality.

Having more HP "than you need" is not bad at all, and certainly not pointless or worthless. Your argument is based off of a healer performing perfectly in every way and never making a mistake ever. Same with the tank.

"Extra" HP not only allows for mistakes by both the tank and healer, but in the case of the big heals like Benediction, it makes a HUGE difference in how much the healer has to heal. A healer that benedicts a tank with a large HP pool can spend more time DPSing because their heal heals for MORE HP than it would for a tank with low HP pool. Also, many other heals and mitigation (especially in the case of TBN for DRK) are based off % of HP. So TBN absorbs more damage for a tank with a higher HP pool than it does for one with a low HP pool.

And to be quite frank, the benefit you get from STR acc is nearly insignificant. You simply don't get enough STR from them to make much of a significant difference in DPS.

tl;dr The "benefits" you gain from 270 STR accessories do not outweigh the detriments, and having more HP "than you need" is not a bad thing.