I rarely starve anywhere! The most memorable exception was an incredibly highly rated by those who like such things, offal based restaurant in Rome. There really wasn't a single thing I could eat. All the food was served family style, everything had an elemet of meat in it somehow and the kitchen shrugged and pulled the salami off the top of the cheese and offered it back when I asked in my best Italian if there was something vegetarian, even a plain salad. It seems they only buy the food for each evening, and there is no menu, so they make everything and bring it out and that night there was nothing that wasn't meatified!
Steak restaurants I normally do fine - a baked potato, some sour cream, and hopefully a chop salad (tomatoes, onions, blue cheese mmmmm) - I am such a cheap date at a steak house!