@Sanguine
Why do they do that---because they're scared of peanuts in the first place?
I read somewhere that peanut allergies can sometimes be reversed by gradually introducing them into the diet, but I guess it would mean trips to the hospital in the meantime.
One of my relatives was allergic to nuts as a child, but he outgrew the allergy, apparently. As an adult, he no longer has an adverse reaction to nuts.
What really bugs me is that a lot of people claiming to have allergies are trying to deny the products containing these allergens to the rest of us. For example, Southwest Airlines just announced it will no longer serve those tiny bags with 2 peanuts in them. Instead, they will have pretzels. I expect eventually those with alleged gluten intolerances will force the airline to do away with the pretzels too since they contain wheat. Seems to me if you can't eat something, just don't eat it. Don't deny it to someone else without those issues.
By the way, when I say "alleged allergies, " I am aware that there are people who are genuinely affected by certain things and can't have them. But I also suspect there are some who aren't really allergic, but they have a mission in life to make life miserable for others. I know some people claim they have an adverse reaction when someone a mile away eats peanuts. I don't buy that. Never heard of allergic reactions being contagious. Maybe someone here with more medical knowledge can enlighten me.