I just signed the petition. I grew up in Singapore so had plenty of shark fin soup. Pretty nondescript taste but supposed to be good for you. Actually cartilage is good for the joints. But later I discovered that there is also in Singapore a dish I did not have called "beef tendon stew". Eat that every day while growing up and your joints will be like iron.
For a short time my favorite Singapore food was turtle soup. Then I saw the turtles still wiggling after they pulled out the head. After that I ate no more turtle soup. But hey you folks probably all love baked lobster. I worked in a restaurant in Vermont and I do not even care to describe how that is made.
PS... Shark fin soup is not what I would call a "novelty food" as described by Kneptoon below. It is rather a traditional food analogous to New England Clam Chowder. Asian cuisine does have novelty foods like fresh monkey brains, meat of tortured dogs, etc. However shark fin soup is (or was) quite mainstream, right up there with Bird's Nest Soup.
Cats in Europe are natural. Cats in Australia are destroying wildlife species. This does not make cats 'novelty pets' or some weird animal. Everything has its place in nature. I respect vegetarianism, in fact Asia is the heartland of vegetarianism. However aside from vegetarianism, there is no reason to take a demeaning attitude toward shark fin soup any more than toward New England Clam Chowder. If the clams were tortured and misused then we should boycott Clam Chowder. If the price of shark fins were not out of proportion, and if also sharks were not endangered, then there is no reason to boycott shark fin soup any more than bird nest soup or clam chowder or cats. However because cats are a danger in Australia they need to be severely contolled in Australia. (Actually cats are a bit out of control everywhere but I think I've made my point.) Similarly, shark fin products need to be boycotted.
PPS--perhaps more effective than to boycott shark fins is a "price freeze". Maybe governments should require that the price of the fins, from reputable fishermen who sell shark meat, must be low. I.e. put a "price freeze" on shark fins. This may cause the value of fins to be so low that nobody will bother to kill a shark for only the fins.
Actually if you want a 'novelty food' how about New England baked lobster. The lobster is sliced open and marinated, still alive. Then still alive and wiggling, slowly baked in the oven. My friends say it is delicious but for myself, I think the entire flavor is in the butter and just as soon eat only the garlic toast dipped in butter.