As they pass by the painting that Ned wrinkles his nose at, Ginsberg goes one step further in expressing his displeasure with it by actively turning away from it, look of disgust on his face. If he's at all ashamed of displaying his visceral reaction to the painting in such an obvious way, he doesn't indicate it; he's never had a problem with sharing his feelings, whether they be positive or negative, and they're overwhelmingly negative here.

"That's sick," he says, and he's obviously talking about the painting. "Sure, life's dark. We all deal with that every single day. But the people who came up with the idea of hell were seriously disturbed, I think, and not just in the way a lot of us are seriously disturbed. I mean, who sat down and really thought that the punishment for doing some shitty things in your life should be... that? It makes me want to throw up."

It bothers him on a level he can't quite articulate, but then, violence of any kind always has, even on an artistic level. He knows it's not real, but that doesn't stop it from being sickening, in his opinion. Maybe it's juvenile to be so obviously affected by a stupid painting, but he is, and he can't hide it. That's why he'd always preferred looking at the paintings that didn't have anything to do with religion, and that's why he's glad that the room they're passing into next is moving away from that kind of thing.