Bellagio, Encore and some others are a great examples why interior design matters. Why architecture MATTERS. Why feng shui MATTERS. Its the art of making a space not only beautiful, but also inspiring, joyful, full of positive energy. Most people dont pay any attention to this aspect. Yet, design is THE ONLY aspect which made Las Vegas, Dubai or Barcelona so many tourists. Its the reason why Apple is so big now. Just good design.
Dont underestimate it.
Ultimately, its the art of manage the energies around us.
Only those art or metaphysics oriented truly gets it.