Go's a great language for Google. Their use case needs very high througput but can tolerate GC pauses, their code is a giant single-repo monolith with thousands of contributors where pedantry prevents conflict, and they hire a bunch of people straight out of college who haven't figured out how not to be clever yet. "C, but with unremovable training wheels" is a really good tradeoff for their specific situation.

Why anyone who doesn't share Google's unique issues would want to use it, though, is beyond me.