People publish in journals (etc) because of the peer review and reputation. People are much more likely to read, trust, cite a paper that’s been through peer re

People publish in journals (etc) because of the peer review and reputation. People are much more likely to read, trust, cite a paper that’s been through peer review. Also people are more likely to discover the paper by looking in prestigious venues than if it’s just in the arxiv flood. For promotion and tenure, papers aren’t considered unless they’re published and prestigious venues count much more.