Wise men in every tradition tell us that suffering brings clarity, illumination:

For the Buddha, suffering is the first rule of life, and insofar as some of it arises from our own wrongheadedness — our cherishing of self — we have the cure for it within. Thus in certain cases, suffering may be an effect, as well as a cause, of taking ourselves too seriously. I once met a Zen-trained painter in Japan, in his 90s, who told me that suffering is a privilege, it moves us toward thinking about essential things and shakes us out of shortsighted complacency; when he was a boy, he said, it was believed you should pay for suffering, it proves such a hidden blessing.

Suffering is essential for empathy:

As a boy, I’d learned that it’s the Latin, and maybe a Greek, word for “suffering” that gives rise to our word “passion.” Etymologically, the opposite of “suffering” is, therefore, “apathy”; the Passion of the Christ, say, is a reminder, even a proof, that suffering is something that a few high souls embrace to try to lessen the pains of others. Passion with the plight of others makes for “compassion.”

"Why are you doing that!?"

"It feels so good when I stop..."