The scene itself bothers me a lot, and nobody deserves what he did to her real or not (the choking is the worst part, I'm still sweating thinking of it), but it's not even the point. The MC clearly blames, even hates, all women for his loneliness. He feels entitled to affection and sex. He thinks his fate is their fault, somehow. How can this not make you ill? This kind of thing makes it hard for people who are feeling lonely because of such circumstances to even talk about it lest we be lumped with the hate filled freaks.