I am really snobby about wotsits, coke and macdonalds, but think chips, hotdogs anddonuts are ok. They are real food, and if i don't share them I can't eat them in peace
I think the problem is first impressions. If, the first time you see a child it is scarfing chips, you tend to assume it is always scarfing chips. They may be the only chips the child has had that year, but nobody else knows that except the mother, and the judgement is made.
I myself was in convultions of snobbishness last week, as I ordered some orange juice for ds, but didn't trust him with a glass so the waitress put it in a paper cup with a straw.... and the cup had the Coca Cola emblem on the side.
I walked around wanting to scream at everyone who glanced at me "It's not Coke! It's real juice!"