It's about "hitting bottom." A remarkable personal testimony from Vanderleun, re-posted. One para from it:
I'd seen far too much of this scuzzy joint in the last few months and I was destined to see a lot more of it in the months to come. It was one of those 'great bad places' in American life; one of those spaces where they're selling, morning, noon and far into the night, eight kinds of despair on tap and a wide selection of numb on the shelves behind the bar; mixed, on-the-rocks, or "neat."