Never. I would rather eat at one place because my stomach is pretty sensitive to different kinds of food. Also, as much as possible, I try not to buy take out. I would rather eat at home or cook something for myself to save money.
That's the ideal situation, considering what we are cooking at home haha... Either cases, if I am at a mall that has dozens of places to eat, I don't mind buying in separate places, sometimes is cheaper and we can get the best of two worlds, it's a good situation IMO.