I'm an omnivore. I'm having guests in my house who are vegetarians. Am I required to make a dish that suits their vegetarian diet?
Of course, I would have a vegetable dish, but it might only be a salad. Am I required to make enough food to suit their special diets and make sure they're full and satisfied or should they make their own/go out and eat somewhere else?
(this is hypothetical, but something I find interesting)