Maybe he was lonely, never connected with anyone, and saw no point. Who knows.
At 22 that means a long time yet ahead of perceived (or perhaps real) emptiness. At 22, that could be overwhelming.
God have mercy on him, whatever this young man’s reasons for giving up.
He may have learned that at the ultra-liberal university of Puget Sound near Seattle. He was, after all, one of those terrible white guys responsible for all the suffering of poor minorities in the world. .