Go seems to be a favorite language to hate, and yet, there's a lot of awesome software in the world because of it. It's simply and lack of features was intentional; not a design flaw. It was built by some of the premier computer scientists of our age not for lacking of knowledge of modern language features but intentionally avoiding complexity.

Choose Rust and C++ for building your next OS, but Go is great when I need to build a web service that's fast enough and hire a team that may not know the language walking in the door but can be productive quickly.