For me, this always seemed to have the proper degree of symmetry. It will likely be a few more generations before taxonomists no longer think of these two families in that way. Few families of flowering plants are more prized as ornamentals than the orchids. One can always point to the economic importance of vanilla as a flavoring, but the fact is that except for their beauty, the plants are of little value. Still, great sums of money have been spent collecting and growing orchids.
Some rare kinds can be worth thousands of dollars.
So while it might be true that orchid are of little agronomic value to the majority of humans, to those who find them esthetic worthy, no price is too great for these treasures.