Is school a constant comparison or competition for parents? I am honestly getting so sick of all the "hens clucking in a corner."

I take DS to school sometimes, and its a routine for him, as we are walking to the door of his class, he asks what I packed him for lunch. I'll name whatever is in his lunch, and it never fails. I get one parents passing me in the hallway saying that they would never pack that."

As a rule I am very health conscious mom, as I run a dayhome... (well duh hahah)

Today for example I packed:

-Non sweetened apple juice, that is half juice half water
-Pasta and meat sauce (sauce is made from scratch)
-A cinnamon croissant
-A banana
-Yogurt
-And as a treat gold fish crackers

I had this mom say that gold fish crackers are terrible, blah blah...I have a thick skin, but really, must someone always make comments? Its the same when I go to any school function mom's seem to be one uping each other whenever possible....

I just don't get it?