Sadly, it's not just adults. We actually had an adult relative over for a chicken dinner. When she heard we were actually eating one of our own birds, she asked, "Couldn't you just buy it at the store?" Our response was, "Where do you think that meat comes from? What kind of life do you think those birds have?" Like your little peppers, my kids know where food comes from and appreciate what it takes to eat a raise and prepare a meal. They all love melons,too. :-)
Yeah, that is a sad truth, some don't grow out of it.