As the title states, and that's just my opinion. Why do we keep pulling fish from their natural habitats that have a dismal survival record when placed in captivity in home aquariums? Mandarins, Moorish Idols, Copperband Butterflies are a few that come to mind. Are there success stories with these fish? Absolutely. But for every success story there are probably a hundred failures, maybe more. I fear that as hobbyists if we don't start policing ourselves with regard to something like this someone else will be doing the policing for us. More than likely that will not end well for the aquarium industry.
