For instance: If the Adam and Eve story is figurative, then (regardless of any argument that it "still contains God's truth"), the doctrine of original sin is immediately called into question.
Depends on what precisely is meant by "original sin". In Catholic theology, original sin refers to a loss of sanctifying grace that humans experienced at some point, nothing more than that. It certainly does NOT have anything to do with physical death. That is a Protestant notion.
I think that notion is one of the chief reasons Protestants of literalist bent have such a problem with evolution, whereas Catholicism does not really see it as problematic.
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