Except for the rare direct horror effects, soak is equivalent to healing in most cases (exceptions: Carolyn & Agnes). Most classes have excellent options for horror soak at 0xp, either as allies or accessory slots. Even if the slot was previously contested, Relic Hunter and Charisma frees it right up at the 3xp cost.
Guardians have Something Worth Fighting For and Hallowed Mirror as the premier options, and spending 3xp to draw a card is probably not the best idea for such an XP hungry faction. Survivors have Cherished Keepsake and Peter Sylvestre. Seekers have their pick of disposable allies and Logical Reasoning. Mystics have the same, along with Rosaries, Keys, Fearless, and Deny Existence.
Rogues need horror soak or healing the most, and have the least options for it. There's Lonnie Ritter and Gregory Gry, both of which are only semi-disposable. Moment of Respite edges Lonnie out at 1 more draw for 1 less resource, and while Lonnie can soak damage as well, Rogues usually has that covered with Leather Coat and good . Greg covers 1 less horror, and though he can breakeven his own cost eventually, using him as a horror soak means that he usually won't live long enough to do so. Rogues also love their accessories, precluding something like an Elder Sign Amulet, and drinking their problems away takes quite a few more actions.
So for Rogues, Moment of Respite is the best horror heal/soak they have without going out of faction. In a pinch, they can even Double it!. Though it's still far from an auto-include: taking horror doesn't lose you the game unless you take too much horror. But if you've taken a trauma or two, or are about to face down the Rougarou, keep Moment of Respite in mind.