Absolutely, that's true. Obviously, not every problem needs to be solved with print statements, a debugger or a REPL. But it can help in many cases, and it's better to have too many tools than too few. Of course, it's flippant to just say "there should be a REPL" -- presumably, there are good reasons (better than the one stated) why there isn't one, or isn't one yet, in Go.