But the correct and only sane way to do this is Either<Error, Success> that you can then pass on, map over both or either of the two, flatMap to chain with other Eithers, fold into a single thing etc etc. Not endless sprinkling of

if err != nil { log.Fatal(err) }

everywhere (and no, those operations are not obscure, esoteric or difficult to learn or understand - they're the same for other types like Option, List etc and are trivial to learn in a day for people who aren't familiar with them)

+ not making the compiler distinguish between null and non-nully values (as eg Kotlin, Rust and Haskell does) in itself as well is inexcusable for a modern language

Definitely do.

In Go we just have to emulate it, badly, by manually writing code to forward the error up the stack so you can finally top-level print “error bad thing happen” or maybe some unholy stringification of wrapped errors possibly collected along the way.