@ WHM who stoneskin whole party

[JonFarron]

*teeth and fangs*

You're really assuming things here. In Titan HM, not every tank is super geared, what if you're helping a tank get their relic? Do you know how hard it is for a tank that isn't relic to keep aggro from a fully geared healer? That stoneskin in the beginning allows the WHM to skip a Medica (assuming theres a SCH in the party who can Succor it) effectively lowering their hate in the beginning considerably. What if you're solo healing? (Which is very possible for a geared WHM to do, if there's a Bard in the party) That stoneskin prevents a Medica, you can instead wait until the next tumults or jump. Solo healing WHMs draw MASSIVE aggro, and every bit counts. But you wouldn't know, considering your WHM isn't 50 yet.

Get your WHM to 50 before you start trashing WHMs. Unfortunately, we actually have a mana bar and have to manage hate unlike Scholars.

I stopped doing it except for MT during 8-man content. As OP says, however impolitely he may have so done, it is a huge time sink, and frequently unnecessary. I had someone tell me to SS during Garuda EX, and I told them my cure III was more than enough to deal with the aoe heal need for the first part of that fight. I'd rather cast two Cure IIIs up front to heal when needed than to cast 8x stoneskin every time we start the fight. Nothing wrong with that.

Except for the fact that you effectively just wasted 1000 MP vs waiting a mere 24 seconds to cast SS on everyone before the fight for 0 MP.