Anybody that's a fish keeper would be horrified at the thought of sushi anything. Fish come down with stuff that thinks penacillin is a snack. For example piscine pseudomonas is one vile and nasty bug. Psuedomonas in general is some bad news. Piscine tuberculosis is another bad bug. It makes antibiotic resistant TB in people look like a 95 pound weakling going up against Mike Tyson. Fish also carry some pretty nasty parasites too (that need another species to complete the cycle). I don't want to be an alarmist, but porcine trichinosis is the sniffles in comparison (that being some pretty nasty stuff in its own right). There's a big problem with that in Mexico.
The problem with trich is that it depends where the larvae germinate, e.g., brain tissue. This leads to some really interesting sympoms.
No raw fish for me! :~\ And I don't think that's a particular sacrifice either.