I had to laugh when I saw the title of this thread because my husband's been calling me the nutrition natzi for years!
You know, I don't really blame those kids who see all the forbidden goodies in front of them. I do think parents need to bring nutritional dishes. What happens in a lot of cases, I think, is Mom and Dad are beat after a long day and so they don't have time to prepare anything and stop at the Kroger or Albertsons for cookies, cupcakes, fried chx., chips, pizza, etc. And that's for a sports banquet! Some kind souls do come with a veggie or fruit tray for which I am so grateful!
I don't say anything out loud but I try to bring nutritional options for folks like us who don't want to trash our bodies. This isn't to say I don't enjoy an occasional treat, but those banquets tends to be glutton fests.