Exactly! Feng Shui neveer hurt anyone so let it be.
Penn & Teller did a great show on Feng Shui. They had two "experts" come in to re-do a house, both claiming they were not just making stuff up, but following set rules of Feng Shui. Both rearranged everything completely differently, even stating diametrically opposed reasoning (like #1 "That should be over there because.." and #2 "That can't be over there because...").
Feng Shui is just interior decorating with a mystical component, and boy do they charge for that mystical component.
True, it doesn't hurt anyone. We have a lot of professions that don't technically hurt anyone, but do provide entertainment value although what they're doing is complete bunk. Examples are those that communicate with dead loved ones (known as cold reading in con circles), palm readers, etc.