Pretty dark and beautiful at the same time, which strongly reminds me of Rikka and her delusions from the show Chunnibyou Demo Koi Ga Shitai. Structure represents going down in a specific state of imagination, compared to falling in the pit, then losing hope for help and death from starving and cold.
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Going down into your imagination, running for isolation, sinful life and whatever makes you feel better for a while, then it may easily become hell. If it isn't now, and you even think that everything is fine with you, you can suddenly fall, or might have fallen already into the pit. Pit full of dark deep water, where you can easily drown, and you might need someone to take you out of there.
Or, you can dig your own cesspool with your sins and sit right in the middle, it's warm, yet it stinks a little but still so comfortable... yeah, as long as you consider it a nice place to sleep, it's fine. But when you realize that's - literally - some real shit, it might be a bit too late to get out of there with no…