Yeah, I dunno. While I did enjoy this story about horrible people doing horrible things, at the same time I don't think this is a story where you are supposed to 'like' the characters. I mean like have been mentioned they all do horrible things at times, whether that is almost turning into the abusive girlfriend similar to the boyfriend you fled from, revelling in having others dislike you and your behaviour, or just lazing around doing NEETly things.
That said, the ending felt a bit... flat and unfinished. Nothing really got resolved (not that it had to, some things are best left up to speculation), the characters didn't really seem to have learnt anything, and so forth. I think I'm gonna have to give this one a second read some time, if nothing else just to see the things I've missed on this readthrough. Who knows, maybe I learn something new?