I hate to hear people treating other people bad because of their intolerances. Not like you chose this for your self. I really feel Bad for anyone with all the intolerances. I just have a few. I feel so lucky. But when I tell someone my intolerances they say. Wow! What on earth can you eat?
I think people don't like when your different, "you ought to be like the group and eat cake!". Once at work I had a piece of candy and one lady said she was so happy seeing me eating candy! I notice when I eat with other people that they don't relax and eat their food, they are watching what other are doing with their food. Pretty weird.