Even though I’m practically a straight carnivore, I hate seafood. (Some people don’t consider it meat, but to me, if it’s an animal you killed to eat, it’s meat.)
And the reason is that I can’t eat meat if it still looks like the animal. A hamburger doesn’t bother me because it’s a patty of meat (that I know was a cow, but my mind can separate them because it’s just a random shape). And in fact, even with chicken, if it’s a whole chicken, I can’t eat it. I like fried chicken legs but then I reach the tendons and veins and cartilage and bone and I just gag.
And seafood (except for “Fish Sticks” which may not really be considered actual seafood) is pretty much all still shaped like the animal. There’s its tail, its claws, where it’s head was, etc. YUCK. I guess I can’t picture a hamburger getting up and walking around.