i am here writes, in part: “crab!!!!!! why would anyone want to eat anything that is copying somthing not kosher just knowing that its imitation crab sounds gross.”
Kosher is not about the simple pleasure of eating food that tastes good. It is about holiness and the fulfillment of Hashem’s mitzvos. If the rabbis say that “imitation crab” is kosher, there is nothing gross about it. You may not like it – and you don’t have to like it – but some of us think it is delicious, and if it is kosher, we can eat it, enjoy it, and, more importantly, bring holiness into the world.