Like.
I don't need exceptions because Go function can return multiple values.
I don't need a mocking framework like Mockito because Go has interfaces.
I don't need an interactive debugger because I can debug with command line using gdb.
I don't need named arguments because I can instantiate a struct and call my function with it. (Have you seen Ruby or Javascript code? Almost every function takes 'opts' as a single argument. Go is probably going down this path too.)
Then I learned about Scala. I'm not saying that Scala is better than Go. However, it has everything that I need. :)