The Sensitive Child

Right now my son is crying his eyes out because he found a dead fly on the floor. He has carried the fly around (against my wishes) for the past 30 minutes telling me that the bug "is his friend". He asked me how the bug died and I told him he could have just died because he was old and bugs don't live very long, which prompted even more tears. I know that this should be some learning moment for the boy, but please, it is a bug. I just don't have it in me to sympathize the passing of a fly. Call me callous.