Languages can be pretty useful even if they are imperfect, as others have said. And Go is plenty useful. The Stroustrup quote about C++ comes to mind ...
https://en.wikiquote.org/wiki/Bjarne_Stroustrup
"There are only two kinds of languages: the ones people complain about and the ones nobody uses."
And here's a good set of Q&A from his FAQ; it includes the above quote too:
"Did you really say that?":
http://www.stroustrup.com/bs_faq.html#really-say-that
Languages can be pretty useful even if they are imperfect, as others have said. And Go is plenty useful. The Stroustrup quote about C++ comes to mind ...