The most wholesome beauty is virtue-beauty, the beauty of the soul-emergence into the whole of life, producing a whole person. Virtue-beauty is centered in mortal and immortal goodness shining forth upon the countenance, the movements of the body, and the expression of the individual. The deep, sweet memories of a beloved face, of a beloved deed, passed on from a pure soul, leave the underlying mark of good which all yearn and hope for.
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.