"Why/" questions are hard to answer. Today's question was why did I buy two bell peppers when we'd just tossed two shriveled ones. My answer was, "They are like carrots."
"What?" Some things belong in a refrigerator because they are healthy and it's ok to eat them or put them in soup or stir-fry. I try to have stuff in the refrigerator that's healthy. I don't necessarily eat the stuff, but I need something besides peanut butter when I want a snack. So I buy vegetables and replace them.