how can so many people love "No Longer Human"?

(huge trigger warning for SA and suicide)

I was suggested this book after finishing the masterpiece (imo) Stoner by John Williams. Two books about living a supposedly mundane life.

While Stoner sees the beauty in the everyday, No Longer Human finds the evil in a life where everything is handed to him. Where people show him unconditional love that he in turn refuses and mocks. He judges human actions as vial and fake while creating an entire persona that he uses to fit in. He's then disgusted if anyone falls for this fake persona, as they're just impeccciles laughing at his fake jester act.

The only ones truly suffering in this book are the women who make the mistake of falling for him. He plans a double suicide with a woman, where only she drowns to death. He pawns the clothes of the woman who took him off the street for booze money. He watches a girl he admires for her innocence get raped, then asks was her trust the sin that brought it on??

I myself am I person who has attempted suicide, but I could never imagine dragging anyone down with me. In real life, the author convinced two woman to commit suicide with him, and nearly persuading third. His final attempt was successful and he drowned himself with his final love interest, leaving behind three young daughters.

I can understand feeling isolated by society. This is a cautionary tale of how trying to make yourself someone that society can love, will ultimately leave you lonely and dispared. If your going to be miserable, you might as well be yourself- no matter what anyone else thinks.

One of the last lines of the book being "he was a good boy, an angel". No. He was a devil in a hell he created for himself, with hate and sadness so profound, that he spreads it to anyone with the misfortune of loving him. He proves himself right by showing he's unlovable but never admits it's his selfish actions that cause it. No, it's the "misguided" rules of society that sour everything in his life, not his carelessness and vanity. As much as he tries to describe it as sadness, he only truly cares about numbing his own pain, never caring about the pain he's causing others in the process.

I'm trying to understand how anyone can find this man to be a genius or an angel. I see so many reviews from young people (I believe cause this book was turned into a manga) that really scares me.

So many comments asking if this book sudible for children?? NO! So many children saying they relate to this... It's the job of every individual to figure out what to life means for them. The author whines about not understanding the world, NO ONE DOES!! No one is born with a guide book and that's okay! Awkward moments are how you learn to be around people, it's part of being human! The author would rather be "not human", he chose that for himself (even if it is mental illness). He was NEVER outkasted, he prescribed it to himself with the hatred he assigned to society. All he knew how to do was seek pain and cause it. He uses other people for his own sick amusement, why would a person like that be deserving of happiness?

Please help me understand why this book is so revered. Even PewDiePie ranked this as one of his favorite books, I just don't get it. This man was evil.

I'm also half japanese so I'm thinking maybe people like this as a scene of 20th century Japan. It's one of Japans best selling books. Yet there are so many other authors who show the society in broader & better written light. I don't get it... help me get it.

TLDR: A very sick man wrote a book about how awful society is but he is the one who shaped it. Where is the beauty in that?