Haha, why would I return it? Given the portability, the performance is absolutely incredible. This thing is about 25% faster in my daily work than the 2015 model, it can play games smoothly (tested with GTA V, Witcher 3, Cities Skylines, Tyranny), its very quiet and cool, the display is amazing, the keyboard is much more comfortable than the old one (already got used to it after a day or so) and the battery life is the best of any Mac I have used so far. TouchID works great (much better than on the iPhone) and the touchbar, while requiring some mental adjustment, is a definite productivity upgrade from the useless function key bar. Not to mention that this thing is an absolute marvel of engineering.
The only annoying thing right now is the lack of reasonably priced, functional USB-C multi port hubs... For instance, I can't seem to find a dock that would offer me a bunch of USB ports as well as ethernet. But this is only the question of time.