So to my understanding sushi is not made with raw fish, rather sashimi is. Thus saying you don't like sushi is like saying you don't like sandwiches. Since the only real consistent ingredient it needs is the rice. All other ingredients can be chosen to ones preferences.
Thus sushi can have mercury content, but if you choose salt water free creatures or a vegetarian option, I don't see that being a big issue.
@barefootstache
I'm not sure I'd want to get fish from a well.
@barefootstache
Right, I knew there was some nuance to it, but I couldn't quite remember which. Mostly people just used the term sushi with an icky face to show their disgust for raw fish.
@jq