I scanned through this thread and I HOPE the mods find it and close it.
all I have to say is....
We are aware of the thread (well, at least I am!) and you'll notice it's still open. Like so many other things, if you don't like it, no one's forcing you to eat it (or read it.)
FWIW, though, a good "intro" I've found is the cooked shrimp atop a small rectangle of sticky rice. It's sushi, but in a form I think most of us Americans would not have any objection to eating.
I'm with you when they add in avocado or wasabi, though. Those of you who like that stuff, I'll only say お食事をお楽しみ下さい
Blessings,
Bill