Why the hell would anyone use Go?
(Serious question, since our editors didn't tell us why Go was created, what Go's intended purpose was and whether or not anyone is actually using Go.)
As a software developer here that likes to fiddle with all languages, the second paragraph from Wikipedia seems to answer your question nicely: "It is a statically typed language with syntax loosely derived from that of C, adding garbage collection, type safety, some structural typing capabilities, additional built-in types such as variable-length arrays and key-value maps, and a large standard library."
So from the first few words someone might know C and desire garbage collection to be handled for them? Golang might be a better selection for them than Java.
Personally for me, the built-in primitives for concurrency make it a great language for tinkering in realms of software design that were once onerous to me. But that's only one of a few of the language's goals.
Maybe a better set of questions would be for an elevator pitch on why someone should use golang? Or perhaps if they have dropped some goals of golang for others as development went forward?