Because of original programing such as this:

https://www.youtube.com/watch?v=7d7UiSoIXYA

It's the perfect culture to attract... the not so sociable.

Games is the biggest for me, then food, manga, anime and music

From the poll options I suppose I would have to say food. Friend of the family owned and ran the first Japanese restaurant in the state. My mother's first job was as a waitress there and though I only saw the place in its decline I spent a lot of time playing in the tea houses, goofing around in the kitchen with the old man and trying to tend bar with his old lady while learning dirty Japanese words from the regulars.

First started learning Japanese (and poker incidentally) with their sushi chef from their sushi chef since he lived near us and didn't mind having me around, but it pissed the old folks off because he's originally from Osaka so I wound up taking on his kansai-ben and never used keigo. Still fall into it from time to time if I get into a pitched conversation.

dolphins aren't fish, they don't taste like fish - dolphin meat is extremely dark, almost black and is said to taste like beef liver

You are right, and right and then you are right.

When I was a kid, in the early 70's, in my town, Genoa, Italy we still ate cured dried dolphin meat every now and then. Fishermen didn't actively fish them, but they didn't waste those accidentally caught in the nets (now laws are far stricter to avoid even accidentally catching them, and its sale is strictly forbidden).
Very tasty, more than beef liver I'd say it tasted like bresaola or slinzega (two Northern Italian cured meats that can be made with beef, horse or deer) made with deer meat.

Nothing. I hate it. It is inferior in every way to the United States culture. They lost the war. Get over it