I believe there will be a day when converting CoffeeScript to just native JavaScript won't be very difficult, but until that time, it's useful as a way to have

I believe there will be a day when converting CoffeeScript to just native JavaScript won't be very difficult, but until that time, it's useful as a way to have neat syntax features without having to wait for browsers to support it. Indeed, many of the features CoffeeScript introduced into the JS developer's mindset are or will be present in the upcoming ECMAScript specifications. We can only assume this trend will continue.