It must be where I live, but women are constantly commenting on my purchases as I unload them onto the belt... I am a veggie fanatic, and I love variety, so my cart is loaded with at least 6-10 different types of veggies, whatever meat I need that week (I buy larger packages when they're on sale, so I don't always need it), fruit, cheese (of course), yogurt, Diet Coke and then whatever random things I need, like chicken stock, cream, Splenda, nuts, spices, etc.
More often than not I get "it all looks so healthy, if only you'd get rid of the cream (or bacon or whatever)." And then they laugh. This may be totally bitchy of me, but I usually just glare at them (because every time this happens to me it's an overweight woman, usually with 1-3 children), glare down at their cart (full of sugar, cereal, tv dinners, and maybe some iceberg lettuce), and then glare back up at them again. Then I turn around and don't say a word. I figure I'm being perfectly clear with my eye movements.
To answer the actual question, though... Yes, I do glance in peoples carts as I walk past. Normally, like others, I am saddened by the families buying frozen pizza, frozen fried foods, tv dinners, chips, pop, cookies, etc. I feel blessed to have grown up in a home with real food cooked almost every night. Rarely did we get fast food or processed food items. I hate what is happening to us because of food. The answer is so simple, and yet no one will listen.