I agree entirely - they are great, but in all the Go I've written (which totals about 50kloc so far as a porting project), I haven't actually used them past anything I would have done with zmq in C.
Goroutines are great, but I'm not convinced they are the greatest advantage over C.
Go cleans up and fixes pretty much every issue C had, and improves it in many non-obvious areas, from the syntax to the type system.
And when porting an existing project I'm not surprised if goroutines would come up that often given that they probably don't have any equivalent in the original design.
