There isn't really an excuse any more either for not experiencing different meals.I know some people that are in their 30's and never even TRIED foods, not even tried and don't like … mostly veg , I don't get it.
Even in Liverpool, the variety of restaurants, cuisines and dishes available has grown massively in the last decade or two, let alone in places like London.
You really only had run of the mill English, French, Chinese, India and (some) Greeks to choose from, while now there's every type of food you can think of.
Many of the run of the mill restaurants, as I mentioned earlier, have improved significantly and diversified their menus, so really it's nothing but being fussy.