I guess we just disagree, or maybe you're used to worse dubs than I am. There's nothing inherently flat about dubbing at all. In fact, in many (older) movies and shows, actors would dub over themselves to get better audio.
I also think it is beautiful to hear the sound of the original language, particularly if it is one I am not used to. It's part of the charm.
I have grown up with dubs, thou, so I understand you. But once one gets used to no dubs, there is no way back. It's like removing sugar from the coffee.