I genuinely can't think of anything, there are odd things from all different cuisines that I'm not bothered about but I'd never write off a whole cuisine. I find it weird how people can say "Indian" or "Chinese", that's like saying "English" yet you wouldn't find anyone comparing a Sunday roast to fish and chips. I find it totally unbelievable that there is no Indian or Chinese food that they'd like. Szechuan is completely different to Chow Mein which in turn is completely different to Sweet and Sour. A Korma is nothing like a Pathia which in turn is nothing like a Rogan Josh.
I've got a cookbook that is entitled "Curry" and it must contain around 500 recipes, I find it ridiculous that people would lump all those together and go "I don't like curry".
All the people saying Sushi. You do realise that Sushi is rice? You can have all sorts with it, vegetables, meat, fish, then you've got the raw stuff that's called sashimi. Yummy.