Some different opinion:
"Difficulties are our spiritual teachers;
Obstacles are a spur to Dharma practice:
Suffering is a broom to sweep away our negative actions,
Do no regard them with dislike."
"If any teaching you study, reflect upon, or expound becomes an effective remedy against your disturbing emotions[...] then that is called a Mahayana teaching[...]
if your intention is only the eight worldly concerns, your activity is called a black Dharma practice." Guru Padma
"Hell is not punishment, it's training." Shenryu Suzuki