It is well worth seeing.
Two scenes in particular were very powerful. One, where "ProfK" interviews his own father, and learns of the horrible disfiguring wrong that was inflicted on the soul of his father. And the other, the last interview shown in this film, when he finally gets to see and be thanked for the good he did the world.
Some people I know might be offended at this story. To you I say, I am offended at your being offended.