Best thing about British eating out is the stunning variety, you can get just about anything you fancy and pretty easily even in a medium sized town. Better than the US for this in my view. Worst thing about both is the excessive number of chain restaurants, which certainly are industries.
But the best thing about food in general is the diversity, it’s one of the things that makes travel such a joy.
If I was forced to eat one cuisine in one place for the rest of my life it would be Italian in Italy, where quality is king, except in the tourist only places in Rome, Florence and Venice. Just eat where the locals do.
If I was forced to eat in just one restaurant for the rest of my life it would be Eataly Chicago, but that’s a bit of a cheat because it’s got about five restaurants, as well as a proper Italian bar, gelateria, panino place etc etc in it.
https://www.eataly.com/us_en/stores/chicago/chicago-restaurants/
But within a few days I would be prepared to kill someone for a curry, or a home cooked roast.
I’ve had horse, ordered by mistake, it’s fine, very lean. I’ve had goats kid brains for the same reason, less fine but edible smothered in spicy salsa and stuffed in a tortilla.