We are fortunate with our choices of food here in the UK. As for other countries, I don't eat meat ( but do eat fish, not shellfish), so France is a challenge. Have eaten very well in Greece and Spain. USA has to be one of the worst; too much meat, too much slop like creamed sweetcorn/spinach, not enough vegetables, not enough fish. When we were last in the States for a few days post cruise, we were fortunate to find a Cuban restaurant which was a vast improvement on the humungeous platters of 'typical' USA food, always with a bucket of cole slaw. Lovely mojitos too.......
One of the least inspiring is Norway, very beige, very boiled.