I wonder why people do this ?
very simple, money. The Netherlands is one of the biggest markets for exotic insects, amphibians, reptiles etc for the pet trade. If you notice most of the people caught are Dutch. Also famous for orchids and fish. The Gloriosa Superba (or niagala) is actually registered there, so if we want to commercially exploit it, we have to pay some one in the Netherlands royalty.
There is also the angle of, who knows what they might be useful for? cancer?? HIV??. The first to discover it can make billions