Years ago I was in the saltwater fish business, mainly retail. I had at one point 9 tanks throughout the house, from 30gl mini reef to 180gl with nothing but lionfish. Did the eels, the rays, the sharks, seahorses,etc.
I became disillusioned with the hobby after the evidence started mounting on the damage to reef environments from fish/coral collecting.
A well done tank is a beautiful thing but in the end is a selfish act. It's just not worth it to me now.