People also eat Piranha, glass catfish, clown knives, guinea pigs...
I grew up on a farm, I have no problem raising my own food. If it weren't for the fact that most commercial fish foods aren't safe for human consumption, I'd raise my own tilapia and channel cats for food! As it is, I've raised pigs, chickens, turkeys, and rabbits for food, and pets.
By the way, Sushi is one of my FAVORITES!! And not all of it is raw, nagi (eel) is cooked, and so's the shrimp in shrimp nigiri (otherwise, it'd be bluish, not red and white)