[SamReidHughes]

Development using coroutine libraries goes much faster and the resulting code is much more robust than that which uses events and callbacks. This is even more strongly the case in C++ where you can take advantage of traditional C++ RAII on any coroutine stack, which you couldn't do so nicely and clearly with callbacks. In the ten months since we started using them, we've had no stability problems and no strange and inscrutable bugs from within our coroutine implementation. There have been user errors from misuse of coroutines, but nothing anywhere near the order of magnitude of what you get when using callbacks.