This is true faith: connection to the universe and its inner divine consciousness through freedom, individual uniqueness, regard for one's true personality, grounding of the divine within, all expressed through love. It saves, for it makes us one with that which endures and can never be lost. It gives peace, for it brings the gift of Oneness. We are only upset by that which is outside ourselves and threatens to come in and destroy, or by the reflection of the intruder within. If we truly know we are One with all that is, nothing is outside us, nothing can threaten, so there can only be peace.
What do we do with suffering? As far as I can see, we have two choices — we either transform our suffering into something else, or we hold on to it, and eventually pass it on.
In order to transform our pain, we must acknowledge that all people suffer. By understanding that suffering is the universal unifying force, we can see people more compassionately, and this goes some way toward helping us forgive the world and ourselves. By acting compassionately, we reduce the world's net suffering and defiantly rehabilitate the world. It is an alchemical act that transforms pain into beauty. This is good. This is beautiful.
To not transform our suffering and instead transmit our pain to others,...compounds the world's suffering. Most sin is simply one person's suffering passed on to another. This is not good. This is not beautiful.
The utility of suffering, then, is the opportunity it affords us to become better human beings. It is the engine of our redemption.