Once, because there was no pig futures, as long as there was a shortage at the supply end, the price of pork went up all the way. There is often a joke that the meat of the second brother is more expensive than that of the master, and people often ridicule that they can't afford to eat pork. Pork vendors can't help it. The cost is too high for the price to come down.
With live pig futures, pork merchants can keep the price of pork when there is a shortage of supply, and then do more in futures to meet part of the purchase demand through the rise of futures, so as not to make the spot price outrageous. Moreover, speculating in futures is not as easy to control the price as spot, even if it is speculated, it will have scruples.
Therefore, pig futures are a good thing in the long run.