It’s surprising you didn’t mention the most popular language to be invented in the last several years, which while having its own flaws, is superior to Go in all the areas OP listed.
I agree. I am using Java (and other languages) both for my day job and for side projects. Everything just flows smoothly and I don't encounter any frustrations or slow downs that can be attributed to Java the language (or the framework).
Kotlin is also an exciting language that I have started to like, so it could be an option for those who dislike nulls.
Golang frankly seems boring and doesn't have any features I feel is worth switching for. I do understand that others may feel differently and I respect that.
My next side project will probably use a Java backend and a Laravel frontend with HTMX. I'm getting tired of React
What is it you find better in Go?