If I had a choice, I would not stay away for more than couple of meals. But if on vacation or whatever, I could not bear more than a week. I would feel sort of withdrawal symptoms and will look for desi food items in nearby area.
I think its the masala, red pepper and pita which gives the addiction of desi food. However, for some reason even mexican spicy food is not good enough.
I must admit I have eaten a little desi food at home even after having been invited to non-desi house or resturant.
At times I prefer staying at full kitchen hotel just to be able to make simple desi food at leisure.
After eating so many international food I found there is nothing better than desi food. !