Listing common allergens also reduces the extra work for wait staff and helps restaurants turn over tables faster.

Rare allergens are always going to require a bit of work. But it costs a restaurant very little to mark tree nuts, peanuts, eggs, gluten, dairy, soy...and then people don't have to double check.

It would cost only slightly more to give each table an allergy sheet that lists ALL of the ingredients of each menu item so that people with rarer allergies such as, say, cinnamon...

It normalizes dining out for people with allergies and also for people like me who have food intolerances. If we don't have to bring attention to it...then it's much better.

(Also, hotel restaurants that can't even manage to provide ONE animal product free entree...)