My only real criticisms of rust are aesthetical. I never liked how C++ is full of macros and :: and <> and rust inherits that a bit.

I use Go because of the work I do right now, which is deep in Kubernetes and APIs for which Go is just more convenient. Protobuf and K8S are of course supported by rust and many other languages as well, but in Go it’s simply easy… Go was designed from the bottom up to write APIs basically so it’s good at that. And most, almost all, of the K8S ecosystem uses Go which means I’d need a good reason not to use Go for that since standardization, interoperability, and ecosystem are key concerns.

You can use rust for this too, for sure no problem. But with Go you’re doing all of that pretty much out of the box.

The Go ecosystem in general is a little bit stronger due to higher adoption, although I wouldn't really call that a weakness of rust.

And finally less people use Rust which is another consideration for long term maintenance concerns, but to be fair Go adoption is also low.

I’m never an evangelist for any language. Well, if I could simply write everything in typescript I would to be honest because I think it’s just swell but obviously its not for this use case, and the above are the reasons why I use Go and get my teams to use Go for the use case of services, Kubernetes controllers, and since we want to use Go for those things we then also use Go for other random things like CLIs etc just because it makes sense to limit tech stack sprawl.