I wouldn't say it's a particularly great upside, but I've found tooling doesn't tend to work as well with UUID keys as it does integer keys. E.g., Hasura won't

I wouldn't say it's a particularly great upside, but I've found tooling doesn't tend to work as well with UUID keys as it does integer keys. E.g., Hasura won't map UUID keys to the GraphQL ID type [1], which makes working with them unnecessarily difficult. Arguably, the issue should be fixed with the tool (or a different tool chosen), but there's only so many battles to pick and sometimes that decision is out of your control. [1] -- https://github.com/hasura/graphql-engine/issues/3578 https://github.com/hasura/graphql-engine/issues/3578