I just finished Blood Meridian and consulted AI as-needed to cover the many, many metaphors. The funny thing was that Google AI got a lot of the book wrong, getting the fate of some characters mixed up as well as confusing some faceless deaths with others. Too much wanton violence to keep track of.

The book definitely covers evil and nihilism thoroughly, so why would you want to read something like that? Well, for every bad decision someone makes in the book, the reader has the opposite response of, "oh crap, don't do that!" So reading about nihilism doesn't make you more nihilistic. While I thought it was a great book it isn't something you should just read without consulting outside sources.