I don't begrudge anyone who refuses to eat shark on principled protest over its exploitation. It's a just cause. The economics of catching these individual apex animals of the food chain, processing and storing them versus the cost of just a sharp knife to slice off their fins and stack them in a closet to dry are so extreme that commercial boats are forced to kill them inhumanely - the equivalent of cutting off all your arms and legs and letting you sink to the bottom of the ocean. It's a serious tragedy of aquaculture.
I hope I don't ruffle too many fins with this. While some people (typically who have never eaten shark fin) react, accuse others (chinese), and refuse to help (beyond ideological shouting, or worse), I propose a different tack. Eat more shark. The demand will change the economic dynamic toward a more humane harvest.