So, Warmth is 100% useless in this game, right?

In earlier Dark Souls games, the entire point of Pyromancy is that you could use it without having to spend levels making it more powerful. (Moreso in Dark Souls than Dark Souls 2, but still.) The Warmth spell in Dark Souls 2 was really interesting, because it was a fairly powerful healing spell that, again, could be used without stat investment, making it great for careful use in PvP because you couldn't drink Estus- with the tradeoff that it took a long time to use, and enemies could be healed by it the same as you.

In this game, though, wtf is the point of Warmth?

1. You can still use Estus while invading or fighting an invader, so there's not always a need
2. It still takes forever to heal (and can't be buffed in any way)
3. Most importantly, IT TAKES TWENTY-FIVE GODDAMN POINTS IN FAITH TO CAST

Seriously, why the hell would I ever want to use Warmth when the same Faith investment lets you cast GREAT HEAL? GREAT FUCKING HEAL? And casting Great Heal is going to take way less time, and there's no chance of an enemy getting healed by it too. And that's IF you even need to cast healing spells in the first place.

Seriously, what the hell, Fromsoft?

Edit: And it takes two attunement slots! Goddamn, what for?