It doesn't have to always be disgusting, to be a disgusting place.

The unabashed use of racial and LGBT slurs is disgusting. So is the gore raids, the frequent suggestions to self harm (regardless of the presence of "white Knights"), general misogyny, frequent jailbait content (moreso in the old days), shit like that.

Not everything there is disgusting. Not everyone is disgusting. But, compared to, say, imgur or something, you are far more likely to come out of 4chan with a terrible taste in your mouth I would say.