Exceptions travel up the stack on their own. Given that most error cases can't be handled immediately locally (otherwise it would be handled already and not return an error), but higher up (e.g. a web server deciding to return an error code) exceptions will save you a lot of boilerplate, you only have the throw at the source and the catch at the handler.

Meanwhile Go will have some boilerplate at every single level

Errors as values can be made ergonomic, there is the FP-heavy monadic solution with `do`, or just some macro like Rust. Go has none of these.