Have you ever helped someone without some connection to a reward? As a thought experiment, you are in a room with a deaf, blind dying person--they will soon be

Have you ever helped someone without some connection to a reward? As a thought experiment, you are in a room with a deaf, blind dying person--they will soon be gone from this world. They are reaching for water you can see on their bedside, but can't quite reach it. Do you bother to cross the room to hand it to them if they will never "be aware of your virtue"? Why expend the energy? Compassion is real, for those who have it. And to be clear, my definition of evil isn't intended here as some religious appeal. In my view, we are all playing an iterated prisoner's dilemma with each other, and good is believing in a better world and collaborating, while evil is defecting and making everything worse for everyone.